42111552 has 56 divisors (see below), whose sum is σ = 127341376. Its totient is φ = 12031488.

The previous prime is 42111541. The next prime is 42111569. The reversal of 42111552 is 25511124.

It is a tau number, because it is divible by the number of its divisors (56).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14323 + ... + 17010.

Almost surely, 2^42111552 is an apocalyptic number.

42111552 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

42111552 is an abundant number, since it is smaller than the sum of its proper divisors (85229824).

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

42111552 is a wasteful number, since it uses less digits than its factorization.

42111552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31355 (or 31345 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 42111552 is about 6489.3414149665. The cubic root of 42111552 is about 347.9101366594.

Adding to 42111552 its reverse (25511124), we get a palindrome (67622676).

The spelling of 42111552 in words is "forty-two million, one hundred eleven thousand, five hundred fifty-two".