102155424 has 48 divisors (see below), whose sum is σ = 306468288. Its totient is φ = 29187072.

The previous prime is 102155423. The next prime is 102155461. The reversal of 102155424 is 424551201.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 102155394 and 102155403.

It is not an unprimeable number, because it can be changed into a prime (102155423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75337 + ... + 76680.

It is an arithmetic number, because the mean of its divisors is an integer number (6384756).

Almost surely, 2^102155424 is an apocalyptic number.

102155424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

102155424 is an abundant number, since it is smaller than the sum of its proper divisors (204312864).

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

102155424 is a wasteful number, since it uses less digits than its factorization.

102155424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152037 (or 152029 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 102155424 is about 10107.1966439760. The cubic root of 102155424 is about 467.4700700524.

The spelling of 102155424 in words is "one hundred two million, one hundred fifty-five thousand, four hundred twenty-four".