47751442 has 4 divisors (see below), whose sum is σ = 71627166. Its totient is φ = 23875720.

The previous prime is 47751433. The next prime is 47751461. The reversal of 47751442 is 24415774.

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., 47734281 + 17161 = 6909^2 + 131^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47751398 and 47751407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11937859 + ... + 11937862.

Almost surely, 2^47751442 is an apocalyptic number.

47751442 is a deficient number, since it is larger than the sum of its proper divisors (23875724).

47751442 is a wasteful number, since it uses less digits than its factorization.

47751442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23875723.

The product of its digits is 31360, while the sum is 34.

The square root of 47751442 is about 6910.2418192130. The cubic root of 47751442 is about 362.7957272890.

The spelling of 47751442 in words is "forty-seven million, seven hundred fifty-one thousand, four hundred forty-two".