42910020 has 96 divisors (see below), whose sum is σ = 134467200. Its totient is φ = 11359872.

The previous prime is 42909991. The next prime is 42910027. The reversal of 42910020 is 2001924.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42909975 and 42910002.

It is not an unprimeable number, because it can be changed into a prime (42910027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123487 + ... + 123833.

It is an arithmetic number, because the mean of its divisors is an integer number (1400700).

Almost surely, 2^42910020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42910020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67233600).

42910020 is an abundant number, since it is smaller than the sum of its proper divisors (91557180).

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

42910020 is a wasteful number, since it uses less digits than its factorization.

42910020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 42910020 is about 6550.5740206489. The cubic root of 42910020 is about 350.0952665840.

Adding to 42910020 its reverse (2001924), we get a palindrome (44911944).

The spelling of 42910020 in words is "forty-two million, nine hundred ten thousand, twenty".