42902471 has 2 divisors, whose sum is σ = 42902472. Its totient is φ = 42902470.

The previous prime is 42902449. The next prime is 42902501. The reversal of 42902471 is 17420924.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42902471 is a prime.

It is a super-3 number, since 3×42902471³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42902411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21451235 + 21451236.

It is an arithmetic number, because the mean of its divisors is an integer number (21451236).

Almost surely, 2^42902471 is an apocalyptic number.

42902471 is a deficient number, since it is larger than the sum of its proper divisors (1).

42902471 is an equidigital number, since it uses as much as digits as its factorization.

42902471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 42902471 is about 6549.9977862592. The cubic root of 42902471 is about 350.0747350612.

Adding to 42902471 its sum of digits (29), we get a square (42902500 = 6550²).

The spelling of 42902471 in words is "forty-two million, nine hundred two thousand, four hundred seventy-one".