74742402947 has 4 divisors (see below), whose sum is σ = 74858643720. Its totient is φ = 74626162176.

The previous prime is 74742402941. The next prime is 74742402953. The reversal of 74742402947 is 74920424747.

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

It is an interprime number because it is at equal distance from previous prime (74742402941) and next prime (74742402953).

It is a cyclic number.

It is not a de Polignac number, because 74742402947 - 2⁶ = 74742402883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74742402895 and 74742402904.

It is not an unprimeable number, because it can be changed into a prime (74742402941) 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, 58119422 + ... + 58120707.

It is an arithmetic number, because the mean of its divisors is an integer number (18714660930).

Almost surely, 2^74742402947 is an apocalyptic number.

74742402947 is a deficient number, since it is larger than the sum of its proper divisors (116240773).

74742402947 is a wasteful number, since it uses less digits than its factorization.

74742402947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116240772.

The product of its (nonzero) digits is 3161088, while the sum is 50.

The spelling of 74742402947 in words is "seventy-four billion, seven hundred forty-two million, four hundred two thousand, nine hundred forty-seven".