42040137 has 8 divisors (see below), whose sum is σ = 57246336. Its totient is φ = 27430352.

The previous prime is 42040121. The next prime is 42040151. The reversal of 42040137 is 73104024.

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 42040137 - 2⁴ = 42040121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42040157) 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, 148938 + ... + 149219.

It is an arithmetic number, because the mean of its divisors is an integer number (7155792).

Almost surely, 2^42040137 is an apocalyptic number.

42040137 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

42040137 is a deficient number, since it is larger than the sum of its proper divisors (15206199).

42040137 is a wasteful number, since it uses less digits than its factorization.

42040137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298207.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 42040137 is about 6483.8365957202. The cubic root of 42040137 is about 347.7133572364.

The spelling of 42040137 in words is "forty-two million, forty thousand, one hundred thirty-seven".