102557426 has 4 divisors (see below), whose sum is σ = 153836142. Its totient is φ = 51278712.

The previous prime is 102557423. The next prime is 102557449. The reversal of 102557426 is 624755201.

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

It can be written as a sum of positive squares in only one way, i.e., 100982401 + 1575025 = 10049^2 + 1255^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102557392 and 102557401.

It is not an unprimeable number, because it can be changed into a prime (102557423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25639355 + ... + 25639358.

Almost surely, 2^102557426 is an apocalyptic number.

102557426 is a deficient number, since it is larger than the sum of its proper divisors (51278716).

102557426 is an equidigital number, since it uses as much as digits as its factorization.

102557426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51278715.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 102557426 is about 10127.0640365310. The cubic root of 102557426 is about 468.0824634925.

The spelling of 102557426 in words is "one hundred two million, five hundred fifty-seven thousand, four hundred twenty-six".