42999552 has 72 divisors (see below), whose sum is σ = 127177680. Its totient is φ = 14330880.

The previous prime is 42999521. The next prime is 42999553. The reversal of 42999552 is 25599924.

42999552 is a `hidden beast` number, since 4 + 2 + 9 + 99 + 552 = 666.

42999552 is nontrivially palindromic in base 11.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×42999552² = 3697922944401408, which contains 22 as substring.

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 42999498 and 42999507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42999553) 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, 3802 + ... + 10022.

Almost surely, 2^42999552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42999552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63588840).

42999552 is an abundant number, since it is smaller than the sum of its proper divisors (84178128).

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

42999552 is an equidigital number, since it uses as much as digits as its factorization.

42999552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6246 (or 6226 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 42999552 is about 6557.4043645333. The cubic root of 42999552 is about 350.3385893505.

The spelling of 42999552 in words is "forty-two million, nine hundred ninety-nine thousand, five hundred fifty-two".