1042551251 has 8 divisors (see below), whose sum is σ = 1204875360. Its totient is φ = 883574208.

The previous prime is 1042551241. The next prime is 1042551253. The reversal of 1042551251 is 1521552401.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042551251 is a prime.

It is a super-2 number, since 2×1042551251² = 2173826221923330002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042551251.

It is not an unprimeable number, because it can be changed into a prime (1042551253) 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, 836096 + ... + 837341.

It is an arithmetic number, because the mean of its divisors is an integer number (150609420).

Almost surely, 2^1042551251 is an apocalyptic number.

1042551251 is a deficient number, since it is larger than the sum of its proper divisors (162324109).

1042551251 is an equidigital number, since it uses as much as digits as its factorization.

1042551251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673533.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1042551251 is about 32288.5622318492. The cubic root of 1042551251 is about 1013.9871965077.

The spelling of 1042551251 in words is "one billion, forty-two million, five hundred fifty-one thousand, two hundred fifty-one".