142404401 has 4 divisors (see below), whose sum is σ = 143787072. Its totient is φ = 141021732.

The previous prime is 142404389. The next prime is 142404403. The reversal of 142404401 is 104404241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142404401 - 2¹⁸ = 142142257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142404403) 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, 691181 + ... + 691386.

It is an arithmetic number, because the mean of its divisors is an integer number (35946768).

Almost surely, 2^142404401 is an apocalyptic number.

It is an amenable number.

142404401 is a deficient number, since it is larger than the sum of its proper divisors (1382671).

142404401 is a wasteful number, since it uses less digits than its factorization.

142404401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382670.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 142404401 is about 11933.3315130352. The cubic root of 142404401 is about 522.2051338724.

Adding to 142404401 its reverse (104404241), we get a palindrome (246808642).

The spelling of 142404401 in words is "one hundred forty-two million, four hundred four thousand, four hundred one".