1142012257 has 16 divisors (see below), whose sum is σ = 1192731840. Its totient is φ = 1092111552.

The previous prime is 1142012243. The next prime is 1142012269. The reversal of 1142012257 is 7522102411.

It is a cyclic number.

It is not a de Polignac number, because 1142012257 - 2¹⁹ = 1141487969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142012297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1862683 + ... + 1863295.

It is an arithmetic number, because the mean of its divisors is an integer number (74545740).

Almost surely, 2^1142012257 is an apocalyptic number.

It is an amenable number.

1142012257 is a deficient number, since it is larger than the sum of its proper divisors (50719583).

1142012257 is a wasteful number, since it uses less digits than its factorization.

1142012257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1142012257 is about 33793.6718484393. The cubic root of 1142012257 is about 1045.2582123306.

Adding to 1142012257 its reverse (7522102411), we get a palindrome (8664114668).

The spelling of 1142012257 in words is "one billion, one hundred forty-two million, twelve thousand, two hundred fifty-seven".