1140671021 has 8 divisors (see below), whose sum is σ = 1304037504. Its totient is φ = 977407920.

The previous prime is 1140671017. The next prime is 1140671053. The reversal of 1140671021 is 1201760411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1140671021 - 2² = 1140671017 is a prime.

It is a super-2 number, since 2×1140671021² = 2602260756298364882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140671921) 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, 545 + ... + 47766.

It is an arithmetic number, because the mean of its divisors is an integer number (163004688).

Almost surely, 2^1140671021 is an apocalyptic number.

It is an amenable number.

1140671021 is a deficient number, since it is larger than the sum of its proper divisors (163366483).

1140671021 is an equidigital number, since it uses as much as digits as its factorization.

1140671021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51691.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 1140671021 is about 33773.8215338448. The cubic root of 1140671021 is about 1044.8488509516.

The spelling of 1140671021 in words is "one billion, one hundred forty million, six hundred seventy-one thousand, twenty-one".