142400046 has 16 divisors (see below), whose sum is σ = 285058944. Its totient is φ = 47423544.

The previous prime is 142400021. The next prime is 142400053. The reversal of 142400046 is 640004241.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 142399995 and 142400031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3226 + ... + 17181.

It is an arithmetic number, because the mean of its divisors is an integer number (17816184).

Almost surely, 2^142400046 is an apocalyptic number.

142400046 is an abundant number, since it is smaller than the sum of its proper divisors (142658898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142400046 is a wasteful number, since it uses less digits than its factorization.

142400046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21575.

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

The square root of 142400046 is about 11933.1490395453. The cubic root of 142400046 is about 522.1998104729.

Adding to 142400046 its reverse (640004241), we get a palindrome (782404287).

The spelling of 142400046 in words is "one hundred forty-two million, four hundred thousand, forty-six".