7542442457 has 8 divisors (see below), whose sum is σ = 8230085472. Its totient is φ = 6855127200.

The previous prime is 7542442423. The next prime is 7542442469.

7542442457 is nontrivially palindromic in base 10.

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 7542442457 - 2¹⁰ = 7542441433 is a prime.

It is a super-3 number, since 3×7542442457³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7542442487) 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, 32519 + ... + 127052.

It is an arithmetic number, because the mean of its divisors is an integer number (1028760684).

Almost surely, 2^7542442457 is an apocalyptic number.

It is an amenable number.

7542442457 is a deficient number, since it is larger than the sum of its proper divisors (687643015).

7542442457 is a wasteful number, since it uses less digits than its factorization.

7542442457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163879.

The product of its digits is 1254400, while the sum is 44.

The square root of 7542442457 is about 86847.2363233281. The cubic root of 7542442457 is about 1961.1192462906.

The spelling of 7542442457 in words is "seven billion, five hundred forty-two million, four hundred forty-two thousand, four hundred fifty-seven".