7042673557 has 4 divisors (see below), whose sum is σ = 7073427820. Its totient is φ = 7011919296.

The previous prime is 7042673503. The next prime is 7042673581. The reversal of 7042673557 is 7553762407.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6283891441 + 758782116 = 79271^2 + 27546^2 .

It is a cyclic number.

It is not a de Polignac number, because 7042673557 - 2¹⁵ = 7042640789 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 (7042623557) 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, 15376788 + ... + 15377245.

It is an arithmetic number, because the mean of its divisors is an integer number (1768356955).

Almost surely, 2^7042673557 is an apocalyptic number.

It is an amenable number.

7042673557 is a deficient number, since it is larger than the sum of its proper divisors (30754263).

7042673557 is a wasteful number, since it uses less digits than its factorization.

7042673557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30754262.

The product of its (nonzero) digits is 1234800, while the sum is 46.

The square root of 7042673557 is about 83920.6384449022. The cubic root of 7042673557 is about 1916.8105282952.

The spelling of 7042673557 in words is "seven billion, forty-two million, six hundred seventy-three thousand, five hundred fifty-seven".