1142205031 has 12 divisors (see below), whose sum is σ = 1264664016. Its totient is φ = 1030773920.

The previous prime is 1142205011. The next prime is 1142205037. The reversal of 1142205031 is 1305022411.

It is not a de Polignac number, because 1142205031 - 2⁹ = 1142204519 is a prime.

It is a super-2 number, since 2×1142205031² = 2609264665683421922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142205037) 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 11 ways as a sum of consecutive naturals, for example, 17875 + ... + 51028.

It is an arithmetic number, because the mean of its divisors is an integer number (105388668).

Almost surely, 2^1142205031 is an apocalyptic number.

1142205031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1142205031 is a deficient number, since it is larger than the sum of its proper divisors (122458985).

1142205031 is a wasteful number, since it uses less digits than its factorization.

1142205031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69062 (or 69051 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1142205031 is about 33796.5239484773. The cubic root of 1142205031 is about 1045.3170229282.

Adding to 1142205031 its reverse (1305022411), we get a palindrome (2447227442).

The spelling of 1142205031 in words is "one billion, one hundred forty-two million, two hundred five thousand, thirty-one".