120340142 has 16 divisors (see below), whose sum is σ = 196183680. Its totient is φ = 55030752.

The previous prime is 120340139. The next prime is 120340151. The reversal of 120340142 is 241043021.

It is a self number, because there is not a number n which added to its sum of digits gives 120340142.

It is a congruent number.

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, 18398 + ... + 24065.

It is an arithmetic number, because the mean of its divisors is an integer number (12261480).

Almost surely, 2^120340142 is an apocalyptic number.

120340142 is a deficient number, since it is larger than the sum of its proper divisors (75843538).

120340142 is a wasteful number, since it uses less digits than its factorization.

120340142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42587.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 120340142 is about 10969.9654511762. The cubic root of 120340142 is about 493.7080098458.

Adding to 120340142 its reverse (241043021), we get a palindrome (361383163).

The spelling of 120340142 in words is "one hundred twenty million, three hundred forty thousand, one hundred forty-two".