1042242551 has 4 divisors (see below), whose sum is σ = 1191134352. Its totient is φ = 893350752.

The previous prime is 1042242521. The next prime is 1042242559. The reversal of 1042242551 is 1552422401.

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

It is not a de Polignac number, because 1042242551 - 2¹⁴ = 1042226167 is a prime.

It is a super-2 number, since 2×1042242551² = 2172539070229975202, 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 1042242551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042242559) 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, 74445890 + ... + 74445903.

It is an arithmetic number, because the mean of its divisors is an integer number (297783588).

Almost surely, 2^1042242551 is an apocalyptic number.

1042242551 is a deficient number, since it is larger than the sum of its proper divisors (148891801).

1042242551 is an equidigital number, since it uses as much as digits as its factorization.

1042242551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148891800.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1042242551 is about 32283.7815473962. The cubic root of 1042242551 is about 1013.8871059055.

Adding to 1042242551 its reverse (1552422401), we get a palindrome (2594664952).

The spelling of 1042242551 in words is "one billion, forty-two million, two hundred forty-two thousand, five hundred fifty-one".