421242153 has 8 divisors (see below), whose sum is σ = 573606528. Its totient is φ = 274852944.

The previous prime is 421242137. The next prime is 421242161. The reversal of 421242153 is 351242124.

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

It is not a de Polignac number, because 421242153 - 2⁴ = 421242137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421242053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493626 + ... + 1493907.

It is an arithmetic number, because the mean of its divisors is an integer number (71700816).

Almost surely, 2^421242153 is an apocalyptic number.

It is an amenable number.

421242153 is a deficient number, since it is larger than the sum of its proper divisors (152364375).

421242153 is a wasteful number, since it uses less digits than its factorization.

421242153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987583.

The product of its digits is 1920, while the sum is 24.

The square root of 421242153 is about 20524.1845879440. The cubic root of 421242153 is about 749.6247918787.

Adding to 421242153 its reverse (351242124), we get a palindrome (772484277).

The spelling of 421242153 in words is "four hundred twenty-one million, two hundred forty-two thousand, one hundred fifty-three".