142557911 has 4 divisors (see below), whose sum is σ = 142589232. Its totient is φ = 142526592.

The previous prime is 142557859. The next prime is 142557913. The reversal of 142557911 is 119755241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142557911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142557913) 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, 7370 + ... + 18423.

It is an arithmetic number, because the mean of its divisors is an integer number (35647308).

Almost surely, 2^142557911 is an apocalyptic number.

142557911 is a deficient number, since it is larger than the sum of its proper divisors (31321).

142557911 is an equidigital number, since it uses as much as digits as its factorization.

142557911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31320.

The product of its digits is 12600, while the sum is 35.

The square root of 142557911 is about 11939.7617647925. The cubic root of 142557911 is about 522.3927098219.

The spelling of 142557911 in words is "one hundred forty-two million, five hundred fifty-seven thousand, nine hundred eleven".