42020000 has 120 divisors (see below), whose sum is σ = 113363712. Its totient is φ = 15200000.

The previous prime is 42019981. The next prime is 42020003. The reversal of 42020000 is 2024.

42020000 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 42020000.

It is not an unprimeable number, because it can be changed into a prime (42020003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 219905 + ... + 220095.

Almost surely, 2^42020000 is an apocalyptic number.

42020000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56681856).

42020000 is an abundant number, since it is smaller than the sum of its proper divisors (71343712).

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

42020000 is a wasteful number, since it uses less digits than its factorization.

42020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 42020000 is about 6482.2835482567. The cubic root of 42020000 is about 347.6578307591.

Adding to 42020000 its reverse (2024), we get a palindrome (42022024).

The spelling of 42020000 in words is "forty-two million, twenty thousand".