102103239 has 32 divisors (see below), whose sum is σ = 160677376. Its totient is φ = 56453760.

The previous prime is 102103237. The next prime is 102103291. The reversal of 102103239 is 932301201.

It is a happy number.

It is not a de Polignac number, because 102103239 - 2¹ = 102103237 is a prime.

It is a super-2 number, since 2×102103239² = 20850142828582242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102103237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256989 + ... + 257385.

It is an arithmetic number, because the mean of its divisors is an integer number (5021168).

Almost surely, 2^102103239 is an apocalyptic number.

102103239 is a deficient number, since it is larger than the sum of its proper divisors (58574137).

102103239 is a wasteful number, since it uses less digits than its factorization.

102103239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 102103239 is about 10104.6147378314. The cubic root of 102103239 is about 467.3904558078.

The spelling of 102103239 in words is "one hundred two million, one hundred three thousand, two hundred thirty-nine".