42036720 has 80 divisors (see below), whose sum is σ = 142169472. Its totient is φ = 10190080.

The previous prime is 42036703. The next prime is 42036737. The reversal of 42036720 is 2763024.

It is an interprime number because it is at equal distance from previous prime (42036703) and next prime (42036737).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5322 + ... + 10601.

Almost surely, 2^42036720 is an apocalyptic number.

42036720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42036720 is an abundant number, since it is smaller than the sum of its proper divisors (100132752).

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

42036720 is a wasteful number, since it uses less digits than its factorization.

42036720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15950 (or 15944 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 42036720 is about 6483.5730889688. The cubic root of 42036720 is about 347.7039363288.

Adding to 42036720 its reverse (2763024), we get a palindrome (44799744).

The spelling of 42036720 in words is "forty-two million, thirty-six thousand, seven hundred twenty".