42079620 has 96 divisors (see below), whose sum is σ = 129991680. Its totient is φ = 10085760.

The previous prime is 42079613. The next prime is 42079621. The reversal of 42079620 is 2697024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (42079621) 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, 67671 + ... + 68289.

It is an arithmetic number, because the mean of its divisors is an integer number (1354080).

Almost surely, 2^42079620 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 42079620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64995840).

42079620 is an abundant number, since it is smaller than the sum of its proper divisors (87912060).

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

42079620 is a wasteful number, since it uses less digits than its factorization.

42079620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 42079620 is about 6486.8806062699. The cubic root of 42079620 is about 347.8221776146.

The spelling of 42079620 in words is "forty-two million, seventy-nine thousand, six hundred twenty".