42835440 has 40 divisors (see below), whose sum is σ = 132790608. Its totient is φ = 11422720.

The previous prime is 42835423. The next prime is 42835489. The reversal of 42835440 is 4453824.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 42835398 and 42835407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89001 + ... + 89480.

Almost surely, 2^42835440 is an apocalyptic number.

42835440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42835440 is an abundant number, since it is smaller than the sum of its proper divisors (89955168).

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

42835440 is a wasteful number, since it uses less digits than its factorization.

42835440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178497 (or 178491 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 42835440 is about 6544.8789140824. The cubic root of 42835440 is about 349.8923206168.

The spelling of 42835440 in words is "forty-two million, eight hundred thirty-five thousand, four hundred forty".