102407426261 has 4 divisors (see below), whose sum is σ = 117037058592. Its totient is φ = 87777793932.

The previous prime is 102407426257. The next prime is 102407426263. The reversal of 102407426261 is 162624704201.

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.

It is a cyclic number.

It is not a de Polignac number, because 102407426261 - 2² = 102407426257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102407426263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7314816155 + ... + 7314816168.

It is an arithmetic number, because the mean of its divisors is an integer number (29259264648).

Almost surely, 2^102407426261 is an apocalyptic number.

It is an amenable number.

102407426261 is a deficient number, since it is larger than the sum of its proper divisors (14629632331).

102407426261 is an equidigital number, since it uses as much as digits as its factorization.

102407426261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14629632330.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 102407426261 in words is "one hundred two billion, four hundred seven million, four hundred twenty-six thousand, two hundred sixty-one".