102213420 has 24 divisors (see below), whose sum is σ = 286197744. Its totient is φ = 27256896.

The previous prime is 102213413. The next prime is 102213443. The reversal of 102213420 is 24312201.

102213420 = 1579² + 1580² + ... + 1618².

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102213420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 851719 + ... + 851838.

It is an arithmetic number, because the mean of its divisors is an integer number (11924906).

Almost surely, 2^102213420 is an apocalyptic number.

102213420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102213420 is an abundant number, since it is smaller than the sum of its proper divisors (183984324).

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

102213420 is a wasteful number, since it uses less digits than its factorization.

102213420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703569 (or 1703567 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 102213420 is about 10110.0652816883. The cubic root of 102213420 is about 467.5585178448.

Adding to 102213420 its reverse (24312201), we get a palindrome (126525621).

The spelling of 102213420 in words is "one hundred two million, two hundred thirteen thousand, four hundred twenty".