1142776164 has 24 divisors (see below), whose sum is σ = 2703006880. Its totient is φ = 375706944.

The previous prime is 1142776123. The next prime is 1142776171. The reversal of 1142776164 is 4616772411.

It is a super-2 number, since 2×1142776164² = 2611874722013109792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651394 + ... + 653145.

Almost surely, 2^1142776164 is an apocalyptic number.

It is an amenable number.

1142776164 is an abundant number, since it is smaller than the sum of its proper divisors (1560230716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142776164 is a wasteful number, since it uses less digits than its factorization.

1142776164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304619 (or 1304617 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 1142776164 is about 33804.9724744748. The cubic root of 1142776164 is about 1045.4912227000.

The spelling of 1142776164 in words is "one billion, one hundred forty-two million, seven hundred seventy-six thousand, one hundred sixty-four".