1142251957 has 16 divisors (see below), whose sum is σ = 1457229312. Its totient is φ = 869364720.

The previous prime is 1142251939. The next prime is 1142251961. The reversal of 1142251957 is 7591522411.

It is not a de Polignac number, because 1142251957 - 2¹¹ = 1142249909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142251997) 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 15 ways as a sum of consecutive naturals, for example, 169183 + ... + 175804.

It is an arithmetic number, because the mean of its divisors is an integer number (91076832).

Almost surely, 2^1142251957 is an apocalyptic number.

It is an amenable number.

1142251957 is a deficient number, since it is larger than the sum of its proper divisors (314977355).

1142251957 is a wasteful number, since it uses less digits than its factorization.

1142251957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345048.

The product of its digits is 25200, while the sum is 37.

The square root of 1142251957 is about 33797.2181843417. The cubic root of 1142251957 is about 1045.3313378931.

The spelling of 1142251957 in words is "one billion, one hundred forty-two million, two hundred fifty-one thousand, nine hundred fifty-seven".