7123146157 has 4 divisors (see below), whose sum is σ = 7133955840. Its totient is φ = 7112336476.

The previous prime is 7123146139. The next prime is 7123146167. The reversal of 7123146157 is 7516413217.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7123146157 is a prime.

It is a super-2 number, since 2×7123146157² (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 (7123146167) 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, 5403853 + ... + 5405170.

It is an arithmetic number, because the mean of its divisors is an integer number (1783488960).

Almost surely, 2^7123146157 is an apocalyptic number.

It is an amenable number.

7123146157 is a deficient number, since it is larger than the sum of its proper divisors (10809683).

7123146157 is a wasteful number, since it uses less digits than its factorization.

7123146157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10809682.

The product of its digits is 35280, while the sum is 37.

The square root of 7123146157 is about 84398.7331480752. The cubic root of 7123146157 is about 1924.0836618783.

The spelling of 7123146157 in words is "seven billion, one hundred twenty-three million, one hundred forty-six thousand, one hundred fifty-seven".