142120344 has 16 divisors (see below), whose sum is σ = 355300920. Its totient is φ = 47373440.

The previous prime is 142120291. The next prime is 142120369. The reversal of 142120344 is 443021241.

It is a self number, because there is not a number n which added to its sum of digits gives 142120344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2960817 + ... + 2960864.

Almost surely, 2^142120344 is an apocalyptic number.

It is an amenable number.

142120344 is an abundant number, since it is smaller than the sum of its proper divisors (213180576).

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

142120344 is a wasteful number, since it uses less digits than its factorization.

142120344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5921690 (or 5921686 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 142120344 is about 11921.4237404766. The cubic root of 142120344 is about 521.8576849598.

Adding to 142120344 its reverse (443021241), we get a palindrome (585141585).

The spelling of 142120344 in words is "one hundred forty-two million, one hundred twenty thousand, three hundred forty-four".