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122980501 = 717568643
BaseRepresentation
bin1110101010010…
…00100010010101
322120102001112101
413111020202111
5222440334001
620111522101
73022213510
oct725104225
9276361471
10122980501
1163468086
1235229331
131c62b737
1412493d77
15abe3a01
hex7548895

122980501 has 4 divisors (see below), whose sum is σ = 140549152. Its totient is φ = 105411852.

The previous prime is 122980457. The next prime is 122980537. The reversal of 122980501 is 105089221.

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: 105089221 = 491214031.

It is not a de Polignac number, because 122980501 - 27 = 122980373 is a prime.

It is a super-2 number, since 2×1229805012 = 30248407252422002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122980501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122980001) 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, 8784315 + ... + 8784328.

It is an arithmetic number, because the mean of its divisors is an integer number (35137288).

Almost surely, 2122980501 is an apocalyptic number.

It is an amenable number.

122980501 is a deficient number, since it is larger than the sum of its proper divisors (17568651).

122980501 is an equidigital number, since it uses as much as digits as its factorization.

122980501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17568650.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 122980501 is about 11089.6573887564. The cubic root of 122980501 is about 497.2927022013.

The spelling of 122980501 in words is "one hundred twenty-two million, nine hundred eighty thousand, five hundred one".

Divisors: 1 7 17568643 122980501