1142621764 has 12 divisors (see below), whose sum is σ = 2000974444. Its totient is φ = 570914784.

The previous prime is 1142621749. The next prime is 1142621773. The reversal of 1142621764 is 4671262411.

It can be written as a sum of positive squares in 2 ways, for example, as 1104897600 + 37724164 = 33240^2 + 6142^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92487 + ... + 104110.

Almost surely, 2^1142621764 is an apocalyptic number.

It is an amenable number.

1142621764 is a deficient number, since it is larger than the sum of its proper divisors (858352680).

1142621764 is a wasteful number, since it uses less digits than its factorization.

1142621764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198054 (or 198052 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 1142621764 is about 33802.6887096278. The cubic root of 1142621764 is about 1045.4441352882. Note that the first 3 decimals are identical.

The spelling of 1142621764 in words is "one billion, one hundred forty-two million, six hundred twenty-one thousand, seven hundred sixty-four".