42142397 has 16 divisors (see below), whose sum is σ = 47053824. Its totient is φ = 37422000.

The previous prime is 42142381. The next prime is 42142403. The reversal of 42142397 is 79324124.

It is not a de Polignac number, because 42142397 - 2⁴ = 42142381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42142327) 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, 155372 + ... + 155642.

It is an arithmetic number, because the mean of its divisors is an integer number (2940864).

Almost surely, 2^42142397 is an apocalyptic number.

It is an amenable number.

42142397 is a deficient number, since it is larger than the sum of its proper divisors (4911427).

42142397 is a wasteful number, since it uses less digits than its factorization.

42142397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560.

The product of its digits is 12096, while the sum is 32.

The square root of 42142397 is about 6491.7175693340. The cubic root of 42142397 is about 347.9950592728.

The spelling of 42142397 in words is "forty-two million, one hundred forty-two thousand, three hundred ninety-seven".