1392135120 has 80 divisors (see below), whose sum is σ = 4795139520. Its totient is φ = 371235456.

The previous prime is 1392135119. The next prime is 1392135131. The reversal of 1392135120 is 215312931.

1392135120 is a `hidden beast` number, since 139 + 2 + 13 + 512 + 0 = 666.

1392135120 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320094 + ... + 324413.

It is an arithmetic number, because the mean of its divisors is an integer number (59939244).

Almost surely, 2^1392135120 is an apocalyptic number.

1392135120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1392135120 is an abundant number, since it is smaller than the sum of its proper divisors (3403004400).

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

1392135120 is a wasteful number, since it uses less digits than its factorization.

1392135120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644529 (or 644517 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1392135120 is about 37311.3269664857. The cubic root of 1392135120 is about 1116.5901607445.

The spelling of 1392135120 in words is "one billion, three hundred ninety-two million, one hundred thirty-five thousand, one hundred twenty".