42039351 has 32 divisors (see below), whose sum is σ = 66977280. Its totient is φ = 25964928.

The previous prime is 42039323. The next prime is 42039353. The reversal of 42039351 is 15393024.

It is not a de Polignac number, because 42039351 - 2⁶ = 42039287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42039353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30070 + ... + 31436.

It is an arithmetic number, because the mean of its divisors is an integer number (2093040).

Almost surely, 2^42039351 is an apocalyptic number.

42039351 is the 4101-st heptagonal number.

42039351 is a deficient number, since it is larger than the sum of its proper divisors (24937929).

42039351 is a wasteful number, since it uses less digits than its factorization.

42039351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460 (or 1454 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 42039351 is about 6483.7759831752. The cubic root of 42039351 is about 347.7111902247.

The spelling of 42039351 in words is "forty-two million, thirty-nine thousand, three hundred fifty-one".