42421402 has 8 divisors (see below), whose sum is σ = 64022976. Its totient is φ = 21080412.

The previous prime is 42421399. The next prime is 42421411. The reversal of 42421402 is 20412424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42421402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64738 + ... + 65389.

It is an arithmetic number, because the mean of its divisors is an integer number (8002872).

Almost surely, 2^42421402 is an apocalyptic number.

42421402 is a deficient number, since it is larger than the sum of its proper divisors (21601574).

42421402 is a wasteful number, since it uses less digits than its factorization.

42421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130292.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 42421402 is about 6513.1714241220. The cubic root of 42421402 is about 348.7613412549.

Adding to 42421402 its reverse (20412424), we get a palindrome (62833826).

The spelling of 42421402 in words is "forty-two million, four hundred twenty-one thousand, four hundred two".