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120231401 = 532268517
BaseRepresentation
bin1110010101010…
…01010111101001
322101020101110212
413022221113221
5221234401101
615532550505
72656643603
oct712512751
9271211425
10120231401
116195a6a4
1234322435
131bba8354
1411d7a173
15a84e1bb
hex72a95e9

120231401 has 4 divisors (see below), whose sum is σ = 122499972. Its totient is φ = 117962832.

The previous prime is 120231359. The next prime is 120231409. The reversal of 120231401 is 104132021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101525776 + 18705625 = 10076^2 + 4325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120231401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120231409) 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, 1134206 + ... + 1134311.

It is an arithmetic number, because the mean of its divisors is an integer number (30624993).

Almost surely, 2120231401 is an apocalyptic number.

It is an amenable number.

120231401 is a deficient number, since it is larger than the sum of its proper divisors (2268571).

120231401 is an equidigital number, since it uses as much as digits as its factorization.

120231401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268570.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 120231401 is about 10965.0080255329. The cubic root of 120231401 is about 493.5592579262.

Adding to 120231401 its reverse (104132021), we get a palindrome (224363422).

The spelling of 120231401 in words is "one hundred twenty million, two hundred thirty-one thousand, four hundred one".

Divisors: 1 53 2268517 120231401