142059961 has 4 divisors (see below), whose sum is σ = 142384000. Its totient is φ = 141735924.

The previous prime is 142059943. The next prime is 142059989. The reversal of 142059961 is 169950241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142059961 - 2¹⁷ = 141928889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142059961.

It is not an unprimeable number, because it can be changed into a prime (142059901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161361 + ... + 162238.

It is an arithmetic number, because the mean of its divisors is an integer number (35596000).

Almost surely, 2^142059961 is an apocalyptic number.

It is an amenable number.

142059961 is a deficient number, since it is larger than the sum of its proper divisors (324039).

142059961 is an equidigital number, since it uses as much as digits as its factorization.

142059961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324038.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 142059961 is about 11918.8909299481. The cubic root of 142059961 is about 521.7837668622.

The spelling of 142059961 in words is "one hundred forty-two million, fifty-nine thousand, nine hundred sixty-one".