42500136 has 128 divisors (see below), whose sum is σ = 134369280. Its totient is φ = 10914816.

The previous prime is 42500123. The next prime is 42500137. The reversal of 42500136 is 63100524.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (42500137) 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, 65365 + ... + 66011.

It is an arithmetic number, because the mean of its divisors is an integer number (1049760).

Almost surely, 2^42500136 is an apocalyptic number.

42500136 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42500136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67184640).

42500136 is an abundant number, since it is smaller than the sum of its proper divisors (91869144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42500136 is a wasteful number, since it uses less digits than its factorization.

42500136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 42500136 is about 6519.2128359182. The cubic root of 42500136 is about 348.9769745868.

The spelling of 42500136 in words is "forty-two million, five hundred thousand, one hundred thirty-six".