42065397 has 12 divisors (see below), whose sum is σ = 66285024. Its totient is φ = 25494120.

The previous prime is 42065393. The next prime is 42065437. The reversal of 42065397 is 79356024.

It is not a de Polignac number, because 42065397 - 2² = 42065393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42065393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212353 + ... + 212550.

It is an arithmetic number, because the mean of its divisors is an integer number (5523752).

Almost surely, 2^42065397 is an apocalyptic number.

It is an amenable number.

42065397 is a deficient number, since it is larger than the sum of its proper divisors (24219627).

42065397 is a wasteful number, since it uses less digits than its factorization.

42065397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424920 (or 424917 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 42065397 is about 6485.7842239779. The cubic root of 42065397 is about 347.7829849895.

The spelling of 42065397 in words is "forty-two million, sixty-five thousand, three hundred ninety-seven".