421202542 has 8 divisors (see below), whose sum is σ = 659273616. Its totient is φ = 201444672.

The previous prime is 421202533. The next prime is 421202569. The reversal of 421202542 is 245202124.

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, 4578243 + ... + 4578334.

It is an arithmetic number, because the mean of its divisors is an integer number (82409202).

Almost surely, 2^421202542 is an apocalyptic number.

421202542 is a deficient number, since it is larger than the sum of its proper divisors (238071074).

421202542 is a wasteful number, since it uses less digits than its factorization.

421202542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9156602.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 421202542 is about 20523.2195817323. The cubic root of 421202542 is about 749.6012944531.

Adding to 421202542 its reverse (245202124), we get a palindrome (666404666).

The spelling of 421202542 in words is "four hundred twenty-one million, two hundred two thousand, five hundred forty-two".