102429720 has 48 divisors (see below), whose sum is σ = 332897760. Its totient is φ = 27314496.

The previous prime is 102429697. The next prime is 102429751. The reversal of 102429720 is 27924201.

It is a congruent number.

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, 141904 + ... + 142623.

It is an arithmetic number, because the mean of its divisors is an integer number (6935370).

Almost surely, 2^102429720 is an apocalyptic number.

102429720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102429720 is an abundant number, since it is smaller than the sum of its proper divisors (230468040).

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

102429720 is a wasteful number, since it uses less digits than its factorization.

102429720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284544 (or 284537 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 102429720 is about 10120.7568886917. The cubic root of 102429720 is about 467.8880950939. Note that the first 3 decimals are identical.

The spelling of 102429720 in words is "one hundred two million, four hundred twenty-nine thousand, seven hundred twenty".