7315457642 has 8 divisors (see below), whose sum is σ = 10979366916. Its totient is φ = 3655668672.

The previous prime is 7315457587. The next prime is 7315457647. The reversal of 7315457642 is 2467545137.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6917415241 + 398042401 = 83171^2 + 19951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7315457593 and 7315457602.

It is not an unprimeable number, because it can be changed into a prime (7315457647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025633 + ... + 1032740.

Almost surely, 2^7315457642 is an apocalyptic number.

7315457642 is a deficient number, since it is larger than the sum of its proper divisors (3663909274).

7315457642 is a wasteful number, since it uses less digits than its factorization.

7315457642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060152.

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

The square root of 7315457642 is about 85530.4486250365. The cubic root of 7315457642 is about 1941.2456698561.

The spelling of 7315457642 in words is "seven billion, three hundred fifteen million, four hundred fifty-seven thousand, six hundred forty-two".