102123432 has 48 divisors (see below), whose sum is σ = 277048980. Its totient is φ = 33984000.

The previous prime is 102123407. The next prime is 102123451. The reversal of 102123432 is 234321201.

It can be written as a sum of positive squares in 2 ways, for example, as 100520676 + 1602756 = 10026^2 + 1266^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84432 + ... + 85632.

Almost surely, 2^102123432 is an apocalyptic number.

102123432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102123432 is an abundant number, since it is smaller than the sum of its proper divisors (174925548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102123432 is a wasteful number, since it uses less digits than its factorization.

102123432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394 (or 2387 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 102123432 is about 10105.6138853609. The cubic root of 102123432 is about 467.4212657783.

Adding to 102123432 its reverse (234321201), we get a palindrome (336444633).

The spelling of 102123432 in words is "one hundred two million, one hundred twenty-three thousand, four hundred thirty-two".