421354142151 has 4 divisors (see below), whose sum is σ = 561805522872. Its totient is φ = 280902761432.

The previous prime is 421354142147. The next prime is 421354142207. The reversal of 421354142151 is 151241453124.

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

It is a cyclic number.

It is not a de Polignac number, because 421354142151 - 2² = 421354142147 is a prime.

It is a super-2 number, since 2×421354142151² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421354142351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70225690356 + ... + 70225690361.

It is an arithmetic number, because the mean of its divisors is an integer number (140451380718).

Almost surely, 2^421354142151 is an apocalyptic number.

421354142151 is a deficient number, since it is larger than the sum of its proper divisors (140451380721).

421354142151 is a wasteful number, since it uses less digits than its factorization.

421354142151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140451380720.

The product of its digits is 19200, while the sum is 33.

Adding to 421354142151 its reverse (151241453124), we get a palindrome (572595595275).

The spelling of 421354142151 in words is "four hundred twenty-one billion, three hundred fifty-four million, one hundred forty-two thousand, one hundred fifty-one".