102456445 has 32 divisors (see below), whose sum is σ = 153199872. Its totient is φ = 64046592.

The previous prime is 102456439. The next prime is 102456461. The reversal of 102456445 is 544654201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102456445 - 2⁵ = 102456413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36409 + ... + 39121.

It is an arithmetic number, because the mean of its divisors is an integer number (4787496).

Almost surely, 2^102456445 is an apocalyptic number.

It is an amenable number.

102456445 is a deficient number, since it is larger than the sum of its proper divisors (50743427).

102456445 is a wasteful number, since it uses less digits than its factorization.

102456445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 102456445 is about 10122.0771089732. The cubic root of 102456445 is about 467.9287838770.

The spelling of 102456445 in words is "one hundred two million, four hundred fifty-six thousand, four hundred forty-five".