42401528 has 16 divisors (see below), whose sum is σ = 85618680. Its totient is φ = 19569888.

The previous prime is 42401501. The next prime is 42401531. The reversal of 42401528 is 82510424.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 42401497 and 42401506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203750 + ... + 203957.

Almost surely, 2^42401528 is an apocalyptic number.

It is an amenable number.

42401528 is an abundant number, since it is smaller than the sum of its proper divisors (43217152).

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

42401528 is a wasteful number, since it uses less digits than its factorization.

42401528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407726 (or 407722 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 42401528 is about 6511.6455677501. The cubic root of 42401528 is about 348.7068690211.

The spelling of 42401528 in words is "forty-two million, four hundred one thousand, five hundred twenty-eight".