142256913 has 4 divisors (see below), whose sum is σ = 189675888. Its totient is φ = 94837940.

The previous prime is 142256903. The next prime is 142256927. The reversal of 142256913 is 319652241.

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 142256913 - 2¹⁰ = 142255889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142256903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23709483 + ... + 23709488.

It is an arithmetic number, because the mean of its divisors is an integer number (47418972).

Almost surely, 2^142256913 is an apocalyptic number.

It is an amenable number.

142256913 is a deficient number, since it is larger than the sum of its proper divisors (47418975).

142256913 is an equidigital number, since it uses as much as digits as its factorization.

142256913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47418974.

The product of its digits is 12960, while the sum is 33.

The square root of 142256913 is about 11927.1502463916. The cubic root of 142256913 is about 522.0247892692.

The spelling of 142256913 in words is "one hundred forty-two million, two hundred fifty-six thousand, nine hundred thirteen".