102240215 has 48 divisors (see below), whose sum is σ = 158578560. Its totient is φ = 62556480.

The previous prime is 102240161. The next prime is 102240241. The reversal of 102240215 is 512042201.

102240215 = T₂₁₁ + T₂₁₂ + ... + T₈₅₃.

It is not a de Polignac number, because 102240215 - 2¹⁶ = 102174679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102240193 and 102240202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158684 + ... + 159326.

It is an arithmetic number, because the mean of its divisors is an integer number (3303720).

Almost surely, 2^102240215 is an apocalyptic number.

102240215 is a deficient number, since it is larger than the sum of its proper divisors (56338345).

102240215 is a wasteful number, since it uses less digits than its factorization.

102240215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 102240215 is about 10111.3903593917. The cubic root of 102240215 is about 467.5993707188.

Adding to 102240215 its reverse (512042201), we get a palindrome (614282416).

The spelling of 102240215 in words is "one hundred two million, two hundred forty thousand, two hundred fifteen".