42511404 has 48 divisors (see below), whose sum is σ = 108315872. Its totient is φ = 12897792.

The previous prime is 42511397. The next prime is 42511423. The reversal of 42511404 is 40411524.

It is a happy 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, 9522 + ... + 13254.

Almost surely, 2^42511404 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 42511404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54157936).

42511404 is an abundant number, since it is smaller than the sum of its proper divisors (65804468).

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

42511404 is a wasteful number, since it uses less digits than its factorization.

42511404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3826 (or 3824 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 42511404 is about 6520.0769934104. The cubic root of 42511404 is about 349.0078131162.

Adding to 42511404 its reverse (40411524), we get a palindrome (82922928).

The spelling of 42511404 in words is "forty-two million, five hundred eleven thousand, four hundred four".