42491484 has 36 divisors (see below), whose sum is σ = 122753904. Its totient is φ = 12140352.

The previous prime is 42491473. The next prime is 42491489. The reversal of 42491484 is 48419424.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42491489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84057 + ... + 84560.

Almost surely, 2^42491484 is an apocalyptic number.

It is an amenable number.

42491484 is an abundant number, since it is smaller than the sum of its proper divisors (80262420).

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

42491484 is a wasteful number, since it uses less digits than its factorization.

42491484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168634 (or 168629 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 42491484 is about 6518.5492250960. The cubic root of 42491484 is about 348.9532918885.

The spelling of 42491484 in words is "forty-two million, four hundred ninety-one thousand, four hundred eighty-four".