42993471 has 16 divisors (see below), whose sum is σ = 58567680. Its totient is φ = 28045920.

The previous prime is 42993451. The next prime is 42993491. The reversal of 42993471 is 17439924.

It is an interprime number because it is at equal distance from previous prime (42993451) and next prime (42993491).

It is not a de Polignac number, because 42993471 - 2⁵ = 42993439 is a prime.

It is a super-3 number, since 3×42993471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42993451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43246 + ... + 44228.

It is an arithmetic number, because the mean of its divisors is an integer number (3660480).

Almost surely, 2^42993471 is an apocalyptic number.

42993471 is a deficient number, since it is larger than the sum of its proper divisors (15574209).

42993471 is a wasteful number, since it uses less digits than its factorization.

42993471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286.

The product of its digits is 54432, while the sum is 39.

The square root of 42993471 is about 6556.9406738204. The cubic root of 42993471 is about 350.3220736017.

The spelling of 42993471 in words is "forty-two million, nine hundred ninety-three thousand, four hundred seventy-one".