102420265 has 16 divisors (see below), whose sum is σ = 129040128. Its totient is φ = 77889856.

The previous prime is 102420251. The next prime is 102420277. The reversal of 102420265 is 562024201.

It is a cyclic number.

It is not a de Polignac number, because 102420265 - 2⁵ = 102420233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16539 + ... + 21871.

It is an arithmetic number, because the mean of its divisors is an integer number (8065008).

Almost surely, 2^102420265 is an apocalyptic number.

It is an amenable number.

102420265 is a deficient number, since it is larger than the sum of its proper divisors (26619863).

102420265 is a wasteful number, since it uses less digits than its factorization.

102420265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 102420265 is about 10120.2897685788. The cubic root of 102420265 is about 467.8736981719.

Adding to 102420265 its reverse (562024201), we get a palindrome (664444466).

The spelling of 102420265 in words is "one hundred two million, four hundred twenty thousand, two hundred sixty-five".