142040401 has 2 divisors, whose sum is σ = 142040402. Its totient is φ = 142040400.

The previous prime is 142040323. The next prime is 142040411. The reversal of 142040401 is 104040241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138886225 + 3154176 = 11785^2 + 1776^2 .

It is an emirp because it is prime and its reverse (104040241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142040401 - 2¹⁷ = 141909329 is a prime.

It is not a weakly prime, because it can be changed into another prime (142040411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71020200 + 71020201.

It is an arithmetic number, because the mean of its divisors is an integer number (71020201).

Almost surely, 2^142040401 is an apocalyptic number.

It is an amenable number.

142040401 is a deficient number, since it is larger than the sum of its proper divisors (1).

142040401 is an equidigital number, since it uses as much as digits as its factorization.

142040401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 142040401 is about 11918.0703555567. The cubic root of 142040401 is about 521.7598179163.

Adding to 142040401 its reverse (104040241), we get a palindrome (246080642).

The spelling of 142040401 in words is "one hundred forty-two million, forty thousand, four hundred one".