1125656042131 has 4 divisors (see below), whose sum is σ = 1184901097000. Its totient is φ = 1066410987264.

The previous prime is 1125656042123. The next prime is 1125656042143. The reversal of 1125656042131 is 1312406565211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125656042131 - 2³ = 1125656042123 is a prime.

It is a super-2 number, since 2×1125656042131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125656043131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29622527406 + ... + 29622527443.

It is an arithmetic number, because the mean of its divisors is an integer number (296225274250).

Almost surely, 2^{1125656042131} is an apocalyptic number.

1125656042131 is a deficient number, since it is larger than the sum of its proper divisors (59245054869).

1125656042131 is an equidigital number, since it uses as much as digits as its factorization.

1125656042131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59245054868.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 1125656042131 in words is "one trillion, one hundred twenty-five billion, six hundred fifty-six million, forty-two thousand, one hundred thirty-one".