42837820 has 12 divisors (see below), whose sum is σ = 89959464. Its totient is φ = 17135120.

The previous prime is 42837757. The next prime is 42837869. The reversal of 42837820 is 2873824.

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, 1070926 + ... + 1070965.

It is an arithmetic number, because the mean of its divisors is an integer number (7496622).

Almost surely, 2^42837820 is an apocalyptic number.

It is an amenable number.

42837820 is an abundant number, since it is smaller than the sum of its proper divisors (47121644).

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

42837820 is a wasteful number, since it uses less digits than its factorization.

42837820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141900 (or 2141898 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 42837820 is about 6545.0607331025. The cubic root of 42837820 is about 349.8988006739.

The spelling of 42837820 in words is "forty-two million, eight hundred thirty-seven thousand, eight hundred twenty".