1042512451 has 4 divisors (see below), whose sum is σ = 1043028792. Its totient is φ = 1041996112.

The previous prime is 1042512439. The next prime is 1042512521. The reversal of 1042512451 is 1542152401.

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 1042512451 - 2¹⁹ = 1041988163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042512551) 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, 255130 + ... + 259183.

It is an arithmetic number, because the mean of its divisors is an integer number (260757198).

Almost surely, 2^1042512451 is an apocalyptic number.

1042512451 is a deficient number, since it is larger than the sum of its proper divisors (516341).

1042512451 is an equidigital number, since it uses as much as digits as its factorization.

1042512451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516340.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1042512451 is about 32287.9613943030. The cubic root of 1042512451 is about 1013.9746173687.

Adding to 1042512451 its reverse (1542152401), we get a palindrome (2584664852).

The spelling of 1042512451 in words is "one billion, forty-two million, five hundred twelve thousand, four hundred fifty-one".