42210402 has 64 divisors (see below), whose sum is σ = 95001984. Its totient is φ = 12418560.

The previous prime is 42210383. The next prime is 42210403. The reversal of 42210402 is 20401224.

It is not an unprimeable number, because it can be changed into a prime (42210403) 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, 214168 + ... + 214364.

It is an arithmetic number, because the mean of its divisors is an integer number (1484406).

Almost surely, 2^42210402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42210402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47500992).

42210402 is an abundant number, since it is smaller than the sum of its proper divisors (52791582).

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

42210402 is a wasteful number, since it uses less digits than its factorization.

42210402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 42210402 is about 6496.9532859641. The cubic root of 42210402 is about 348.1821447062.

Adding to 42210402 its reverse (20401224), we get a palindrome (62611626).

The spelling of 42210402 in words is "forty-two million, two hundred ten thousand, four hundred two".