421212153 has 8 divisors (see below), whose sum is σ = 580982400. Its totient is φ = 271125008.

The previous prime is 421212149. The next prime is 421212163. The reversal of 421212153 is 351212124.

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

It is a cyclic number.

It is not a de Polignac number, because 421212153 - 2² = 421212149 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421212163) 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, 2420673 + ... + 2420846.

It is an arithmetic number, because the mean of its divisors is an integer number (72622800).

Almost surely, 2^421212153 is an apocalyptic number.

It is an amenable number.

421212153 is a deficient number, since it is larger than the sum of its proper divisors (159770247).

421212153 is a wasteful number, since it uses less digits than its factorization.

421212153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4841551.

The product of its digits is 480, while the sum is 21.

The square root of 421212153 is about 20523.4537298185. The cubic root of 421212153 is about 749.6069958774.

Adding to 421212153 its reverse (351212124), we get a palindrome (772424277).

The spelling of 421212153 in words is "four hundred twenty-one million, two hundred twelve thousand, one hundred fifty-three".