7142346557 has 4 divisors (see below), whose sum is σ = 7145439456. Its totient is φ = 7139253660.

The previous prime is 7142346479. The next prime is 7142346581. The reversal of 7142346557 is 7556432417.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7556432417 = 137 ⋅55156441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7142346557 is a prime.

It is a super-2 number, since 2×7142346557² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142348557) 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, 1542983 + ... + 1547604.

It is an arithmetic number, because the mean of its divisors is an integer number (1786359864).

Almost surely, 2^7142346557 is an apocalyptic number.

It is an amenable number.

7142346557 is a deficient number, since it is larger than the sum of its proper divisors (3092899).

7142346557 is a wasteful number, since it uses less digits than its factorization.

7142346557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092898.

The product of its digits is 705600, while the sum is 44.

The square root of 7142346557 is about 84512.4047522019. The cubic root of 7142346557 is about 1925.8108964163.

The spelling of 7142346557 in words is "seven billion, one hundred forty-two million, three hundred forty-six thousand, five hundred fifty-seven".