47742131 has 2 divisors, whose sum is σ = 47742132. Its totient is φ = 47742130.

The previous prime is 47742113. The next prime is 47742143. The reversal of 47742131 is 13124774.

Together with previous prime (47742113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47742131 - 2⁶ = 47742067 is a prime.

It is a super-2 number, since 2×47742131² = 4558622144842322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47742094 and 47742103.

It is not a weakly prime, because it can be changed into another prime (47742031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23871065 + 23871066.

It is an arithmetic number, because the mean of its divisors is an integer number (23871066).

Almost surely, 2^47742131 is an apocalyptic number.

47742131 is a deficient number, since it is larger than the sum of its proper divisors (1).

47742131 is an equidigital number, since it uses as much as digits as its factorization.

47742131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 29.

The square root of 47742131 is about 6909.5680762259. The cubic root of 47742131 is about 362.7721453792.

The spelling of 47742131 in words is "forty-seven million, seven hundred forty-two thousand, one hundred thirty-one".