421430135 has 12 divisors (see below), whose sum is σ = 588282408. Its totient is φ = 288980496.

The previous prime is 421430131. The next prime is 421430147. The reversal of 421430135 is 531034124.

It is not a de Polignac number, because 421430135 - 2² = 421430131 is a prime.

It is a super-2 number, since 2×421430135² = 355206717372236450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421430135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421430131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 859817 + ... + 860306.

It is an arithmetic number, because the mean of its divisors is an integer number (49023534).

Almost surely, 2^421430135 is an apocalyptic number.

421430135 is a deficient number, since it is larger than the sum of its proper divisors (166852273).

421430135 is a wasteful number, since it uses less digits than its factorization.

421430135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720142 (or 1720135 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 421430135 is about 20528.7636013473. The cubic root of 421430135 is about 749.7362835787.

Adding to 421430135 its reverse (531034124), we get a palindrome (952464259).

The spelling of 421430135 in words is "four hundred twenty-one million, four hundred thirty thousand, one hundred thirty-five".