47742431 has 8 divisors (see below), whose sum is σ = 52434000. Its totient is φ = 43109440.

The previous prime is 47742407. The next prime is 47742433. The reversal of 47742431 is 13424774.

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

It is not a de Polignac number, because 47742431 - 2⁶ = 47742367 is a prime.

It is a super-2 number, since 2×47742431² = 4558679435579522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47742433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12926 + ... + 16203.

It is an arithmetic number, because the mean of its divisors is an integer number (6554250).

Almost surely, 2^47742431 is an apocalyptic number.

47742431 is a deficient number, since it is larger than the sum of its proper divisors (4691569).

47742431 is a wasteful number, since it uses less digits than its factorization.

47742431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29289.

The product of its digits is 18816, while the sum is 32.

The square root of 47742431 is about 6909.5897852188. The cubic root of 47742431 is about 362.7729052351.

The spelling of 47742431 in words is "forty-seven million, seven hundred forty-two thousand, four hundred thirty-one".