421116242 has 4 divisors (see below), whose sum is σ = 631674366. Its totient is φ = 210558120.

The previous prime is 421116173. The next prime is 421116251. The reversal of 421116242 is 242611124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 245580241 + 175536001 = 15671^2 + 13249^2 .

It is a super-3 number, since 3×421116242³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105279059 + ... + 105279062.

Almost surely, 2^421116242 is an apocalyptic number.

421116242 is a deficient number, since it is larger than the sum of its proper divisors (210558124).

421116242 is a wasteful number, since it uses less digits than its factorization.

421116242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210558123.

The product of its digits is 768, while the sum is 23.

The square root of 421116242 is about 20521.1169773967. The cubic root of 421116242 is about 749.5500957985.

Adding to 421116242 its reverse (242611124), we get a palindrome (663727366).

The spelling of 421116242 in words is "four hundred twenty-one million, one hundred sixteen thousand, two hundred forty-two".