42633378 has 66 divisors (see below), whose sum is σ = 101238939. Its totient is φ = 13463172.

The previous prime is 42633323. The next prime is 42633379. The reversal of 42633378 is 87333624.

It can be written as a sum of positive squares in only one way, i.e., 21316689 + 21316689 = 4617^2 + 4617^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4617.

Its product of digits (72576) is a multiple of the sum of its prime divisors (24).

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (42633379) by changing a digit.

It is a polite number, since it can be written in 32 ways as a sum of consecutive naturals, for example, 2243853 + ... + 2243871.

Almost surely, 2^42633378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42633378

42633378 is an abundant number, since it is smaller than the sum of its proper divisors (58605561).

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

42633378 is an frugal number, since it uses more digits than its factorization.

42633378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 24 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 42633378 is about 6529.4240174766. The cubic root of 42633378 is about 349.3412862225.

The spelling of 42633378 in words is "forty-two million, six hundred thirty-three thousand, three hundred seventy-eight".