142961398 has 16 divisors (see below), whose sum is σ = 234382464. Its totient is φ = 65105280.

The previous prime is 142961389. The next prime is 142961419. The reversal of 142961398 is 893169241.

It is a happy number.

142961398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142961398² = 40875922636228808, which contains 22 as substring.

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, 66765 + ... + 68872.

It is an arithmetic number, because the mean of its divisors is an integer number (14648904).

Almost surely, 2^142961398 is an apocalyptic number.

142961398 is a deficient number, since it is larger than the sum of its proper divisors (91421066).

142961398 is a wasteful number, since it uses less digits than its factorization.

142961398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135687.

The product of its digits is 93312, while the sum is 43.

The square root of 142961398 is about 11956.6466034587. The cubic root of 142961398 is about 522.8850947988.

The spelling of 142961398 in words is "one hundred forty-two million, nine hundred sixty-one thousand, three hundred ninety-eight".