232142421 has 8 divisors (see below), whose sum is σ = 353740864. Its totient is φ = 132652800.

The previous prime is 232142413. The next prime is 232142461. The reversal of 232142421 is 124241232.

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

It is not a de Polignac number, because 232142421 - 2³ = 232142413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 11054401 = 232142421 / (2 + 3 + 2 + 1 + 4 + 2 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232142461) 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, 5527180 + ... + 5527221.

It is an arithmetic number, because the mean of its divisors is an integer number (44217608).

Almost surely, 2^232142421 is an apocalyptic number.

232142421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

232142421 is a deficient number, since it is larger than the sum of its proper divisors (121598443).

232142421 is a wasteful number, since it uses less digits than its factorization.

232142421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11054411.

The product of its digits is 768, while the sum is 21.

The square root of 232142421 is about 15236.2206928096. The cubic root of 232142421 is about 614.5890757486.

Adding to 232142421 its reverse (124241232), we get a palindrome (356383653).

The spelling of 232142421 in words is "two hundred thirty-two million, one hundred forty-two thousand, four hundred twenty-one".