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122513801 = 235326687
BaseRepresentation
bin1110100110101…
…10100110001001
322112112100100012
413103112212021
5222330420201
620053521305
73015231044
oct723264611
9275470305
10122513801
1163179483
1235043235
131c4c7197
14123b1c5b
15ab505bb
hex74d6989

122513801 has 4 divisors (see below), whose sum is σ = 127840512. Its totient is φ = 117187092.

The previous prime is 122513773. The next prime is 122513827. The reversal of 122513801 is 108315221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 108315221 = 715473603.

It is a cyclic number.

It is not a de Polignac number, because 122513801 - 26 = 122513737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 5326687 = 122513801 / (1 + 2 + 2 + 5 + 1 + 3 + 8 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122513861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2663321 + ... + 2663366.

It is an arithmetic number, because the mean of its divisors is an integer number (31960128).

Almost surely, 2122513801 is an apocalyptic number.

It is an amenable number.

122513801 is a deficient number, since it is larger than the sum of its proper divisors (5326711).

122513801 is an equidigital number, since it uses as much as digits as its factorization.

122513801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326710.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 122513801 is about 11068.5952586586. The cubic root of 122513801 is about 496.6628443370.

The spelling of 122513801 in words is "one hundred twenty-two million, five hundred thirteen thousand, eight hundred one".

Divisors: 1 23 5326687 122513801