232142021 has 8 divisors (see below), whose sum is σ = 245930904. Its totient is φ = 218368000.

The previous prime is 232142017. The next prime is 232142023. The reversal of 232142021 is 120241232.

It can be written as a sum of positive squares in 4 ways, for example, as 57532225 + 174609796 = 7585^2 + 13214^2 .

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 232142021 - 2² = 232142017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232142023) 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, 56021 + ... + 60021.

It is an arithmetic number, because the mean of its divisors is an integer number (30741363).

Almost surely, 2^232142021 is an apocalyptic number.

It is an amenable number.

232142021 is a deficient number, since it is larger than the sum of its proper divisors (13788883).

232142021 is a wasteful number, since it uses less digits than its factorization.

232142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7431.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 232142021 is about 15236.2075661892. The cubic root of 232142021 is about 614.5887227530.

Adding to 232142021 its reverse (120241232), we get a palindrome (352383253).

The spelling of 232142021 in words is "two hundred thirty-two million, one hundred forty-two thousand, twenty-one".