42020010 has 48 divisors (see below), whose sum is σ = 109610280. Its totient is φ = 11168640.

The previous prime is 42020003. The next prime is 42020023. The reversal of 42020010 is 1002024.

It can be written as a sum of positive squares in 4 ways, for example, as 6985449 + 35034561 = 2643^2 + 5919^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 42019974 and 42020001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37336 + ... + 38444.

Almost surely, 2^42020010 is an apocalyptic number.

42020010 is an abundant number, since it is smaller than the sum of its proper divisors (67590270).

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

42020010 is a wasteful number, since it uses less digits than its factorization.

42020010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 42020010 is about 6482.2843195898. The cubic root of 42020010 is about 347.6578583379.

Adding to 42020010 its reverse (1002024), we get a palindrome (43022034).

The spelling of 42020010 in words is "forty-two million, twenty thousand, ten".