142472791 has 4 divisors (see below), whose sum is σ = 143594752. Its totient is φ = 141350832.

The previous prime is 142472783. The next prime is 142472831. The reversal of 142472791 is 197274241.

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

It is a cyclic number.

It is not a de Polignac number, because 142472791 - 2³ = 142472783 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 142472791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142472711) 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, 560790 + ... + 561043.

It is an arithmetic number, because the mean of its divisors is an integer number (35898688).

Almost surely, 2^142472791 is an apocalyptic number.

142472791 is a deficient number, since it is larger than the sum of its proper divisors (1121961).

142472791 is a wasteful number, since it uses less digits than its factorization.

142472791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121960.

The product of its digits is 28224, while the sum is 37.

The square root of 142472791 is about 11936.1966723073. The cubic root of 142472791 is about 522.2887171821.

The spelling of 142472791 in words is "one hundred forty-two million, four hundred seventy-two thousand, seven hundred ninety-one".