47402071 has 4 divisors (see below), whose sum is σ = 47716144. Its totient is φ = 47088000.

The previous prime is 47402053. The next prime is 47402081. The reversal of 47402071 is 17020474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17020474 = 2 ⋅8510237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47402071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47402021) 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, 156810 + ... + 157111.

It is an arithmetic number, because the mean of its divisors is an integer number (11929036).

Almost surely, 2^47402071 is an apocalyptic number.

47402071 is a deficient number, since it is larger than the sum of its proper divisors (314073).

47402071 is a wasteful number, since it uses less digits than its factorization.

47402071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314072.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 47402071 is about 6884.9161941159. The cubic root of 47402071 is about 361.9087684589.

The spelling of 47402071 in words is "forty-seven million, four hundred two thousand, seventy-one".