42421502 has 8 divisors (see below), whose sum is σ = 64097136. Its totient is φ = 21055792.

The previous prime is 42421493. The next prime is 42421553. The reversal of 42421502 is 20512424.

It is a happy number.

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

It is a congruent number.

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, 77138 + ... + 77685.

It is an arithmetic number, because the mean of its divisors is an integer number (8012142).

Almost surely, 2^42421502 is an apocalyptic number.

42421502 is a deficient number, since it is larger than the sum of its proper divisors (21675634).

42421502 is a wasteful number, since it uses less digits than its factorization.

42421502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154962.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42421502 is about 6513.1791008693. The cubic root of 42421502 is about 348.7616152998.

Adding to 42421502 its reverse (20512424), we get a palindrome (62933926).

The spelling of 42421502 in words is "forty-two million, four hundred twenty-one thousand, five hundred two".