1142204031 has 8 divisors (see below), whose sum is σ = 1692154160. Its totient is φ = 761469336.

The previous prime is 1142204027. The next prime is 1142204033. The reversal of 1142204031 is 1304022411.

It is not a de Polignac number, because 1142204031 - 2² = 1142204027 is a prime.

It is a super-2 number, since 2×1142204031² = 2609260096865297922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142203995 and 1142204013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142204033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21151900 + ... + 21151953.

It is an arithmetic number, because the mean of its divisors is an integer number (211519270).

Almost surely, 2^1142204031 is an apocalyptic number.

1142204031 is a deficient number, since it is larger than the sum of its proper divisors (549950129).

1142204031 is an equidigital number, since it uses as much as digits as its factorization.

1142204031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42303862 (or 42303856 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1142204031 is about 33796.5091540532. The cubic root of 1142204031 is about 1045.3167178699.

Adding to 1142204031 its reverse (1304022411), we get a palindrome (2446226442).

The spelling of 1142204031 in words is "one billion, one hundred forty-two million, two hundred four thousand, thirty-one".