42072339 has 8 divisors (see below), whose sum is σ = 56410560. Its totient is φ = 27891176.

The previous prime is 42072311. The next prime is 42072341. The reversal of 42072339 is 93327024.

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

It is a cyclic number.

It is not a de Polignac number, because 42072339 - 2⁷ = 42072211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42072439) 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, 38637 + ... + 39710.

It is an arithmetic number, because the mean of its divisors is an integer number (7051320).

Almost surely, 2^42072339 is an apocalyptic number.

42072339 is a deficient number, since it is larger than the sum of its proper divisors (14338221).

42072339 is a wasteful number, since it uses less digits than its factorization.

42072339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78529.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 42072339 is about 6486.3193723405. The cubic root of 42072339 is about 347.8021153346.

The spelling of 42072339 in words is "forty-two million, seventy-two thousand, three hundred thirty-nine".