1131420756 has 24 divisors (see below), whose sum is σ = 2641693824. Its totient is φ = 376895680.

The previous prime is 1131420751. The next prime is 1131420769. The reversal of 1131420756 is 6570241311.

It is a super-2 number, since 2×1131420756² = 2560225854215223072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131420751) 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, 10785 + ... + 48776.

It is an arithmetic number, because the mean of its divisors is an integer number (110070576).

Almost surely, 2^1131420756 is an apocalyptic number.

It is an amenable number.

1131420756 is an abundant number, since it is smaller than the sum of its proper divisors (1510273068).

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

1131420756 is a wasteful number, since it uses less digits than its factorization.

1131420756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61151 (or 61149 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1131420756 is about 33636.5984606054. The cubic root of 1131420756 is about 1042.0167829963.

The spelling of 1131420756 in words is "one billion, one hundred thirty-one million, four hundred twenty thousand, seven hundred fifty-six".