6142640474 has 4 divisors (see below), whose sum is σ = 9213960714. Its totient is φ = 3071320236.

The previous prime is 6142640453. The next prime is 6142640477. The reversal of 6142640474 is 4740462416.

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 only one way, i.e., 4694305225 + 1448335249 = 68515^2 + 38057^2 .

It is not an unprimeable number, because it can be changed into a prime (6142640477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1535660117 + ... + 1535660120.

Almost surely, 2^6142640474 is an apocalyptic number.

6142640474 is a deficient number, since it is larger than the sum of its proper divisors (3071320240).

6142640474 is a wasteful number, since it uses less digits than its factorization.

6142640474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071320239.

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 6142640474 is about 78374.9990366826. Note that the first 3 decimals coincide. The cubic root of 6142640474 is about 1831.4076853442.

The spelling of 6142640474 in words is "six billion, one hundred forty-two million, six hundred forty thousand, four hundred seventy-four".