139242120 has 32 divisors (see below), whose sum is σ = 417726720. Its totient is φ = 37131200.

The previous prime is 139242113. The next prime is 139242143. The reversal of 139242120 is 21242931.

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

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, 580056 + ... + 580295.

It is an arithmetic number, because the mean of its divisors is an integer number (13053960).

Almost surely, 2^139242120 is an apocalyptic number.

139242120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139242120 is an abundant number, since it is smaller than the sum of its proper divisors (278484600).

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

139242120 is a wasteful number, since it uses less digits than its factorization.

139242120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160365 (or 1160361 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 139242120 is about 11800.0898301665. The cubic root of 139242120 is about 518.3107411384.

The spelling of 139242120 in words is "one hundred thirty-nine million, two hundred forty-two thousand, one hundred twenty".