102472420 has 12 divisors (see below), whose sum is σ = 215192124. Its totient is φ = 40988960.

The previous prime is 102472411. The next prime is 102472421. The reversal of 102472420 is 24274201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10810944 + 91661476 = 3288^2 + 9574^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102472391 and 102472400.

It is not an unprimeable number, because it can be changed into a prime (102472421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2561791 + ... + 2561830.

It is an arithmetic number, because the mean of its divisors is an integer number (17932677).

Almost surely, 2^102472420 is an apocalyptic number.

102472420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102472420 is an abundant number, since it is smaller than the sum of its proper divisors (112719704).

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

102472420 is a wasteful number, since it uses less digits than its factorization.

102472420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123630 (or 5123628 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 102472420 is about 10122.8661949074. The cubic root of 102472420 is about 467.9531024183.

The spelling of 102472420 in words is "one hundred two million, four hundred seventy-two thousand, four hundred twenty".