42802840 has 32 divisors (see below), whose sum is σ = 99630000. Its totient is φ = 16530304.

The previous prime is 42802831. The next prime is 42802841. The reversal of 42802840 is 4820824.

It is a super-2 number, since 2×42802840² = 3664166224131200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42802799 and 42802808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42802841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17290 + ... + 19609.

Almost surely, 2^42802840 is an apocalyptic number.

42802840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42802840 is an abundant number, since it is smaller than the sum of its proper divisors (56827160).

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

42802840 is a wasteful number, since it uses less digits than its factorization.

42802840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36939 (or 36935 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 42802840 is about 6542.3879432513. The cubic root of 42802840 is about 349.8035359988.

The spelling of 42802840 in words is "forty-two million, eight hundred two thousand, eight hundred forty".