7442402157 has 6 divisors (see below), whose sum is σ = 10750136462. Its totient is φ = 4961601432.

The previous prime is 7442402119. The next prime is 7442402179. The reversal of 7442402157 is 7512042447.

It can be written as a sum of positive squares in only one way, i.e., 5592197961 + 1850204196 = 74781^2 + 43014^2 .

It is not a de Polignac number, because 7442402157 - 2¹⁰ = 7442401133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7442402197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413466778 + ... + 413466795.

Almost surely, 2^7442402157 is an apocalyptic number.

It is an amenable number.

7442402157 is a deficient number, since it is larger than the sum of its proper divisors (3307734305).

7442402157 is a wasteful number, since it uses less digits than its factorization.

7442402157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826933579 (or 826933576 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 36.

The square root of 7442402157 is about 86269.3581580389. The cubic root of 7442402157 is about 1952.4100953694.

The spelling of 7442402157 in words is "seven billion, four hundred forty-two million, four hundred two thousand, one hundred fifty-seven".