42633541 has 4 divisors (see below), whose sum is σ = 42792300. Its totient is φ = 42474784.

The previous prime is 42633523. The next prime is 42633553. The reversal of 42633541 is 14533624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 772641 + 41860900 = 879^2 + 6470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42633541 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 (42634541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78976 + ... + 79513.

It is an arithmetic number, because the mean of its divisors is an integer number (10698075).

Almost surely, 2^42633541 is an apocalyptic number.

It is an amenable number.

42633541 is a deficient number, since it is larger than the sum of its proper divisors (158759).

42633541 is a wasteful number, since it uses less digits than its factorization.

42633541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158758.

The product of its digits is 8640, while the sum is 28.

The square root of 42633541 is about 6529.4364994232. The cubic root of 42633541 is about 349.3417314336.

The spelling of 42633541 in words is "forty-two million, six hundred thirty-three thousand, five hundred forty-one".