142631403 has 16 divisors (see below), whose sum is σ = 199084032. Its totient is φ = 90720000.

The previous prime is 142631399. The next prime is 142631443. The reversal of 142631403 is 304136241.

It is not a de Polignac number, because 142631403 - 2² = 142631399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142631443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4198 + ... + 17403.

It is an arithmetic number, because the mean of its divisors is an integer number (12442752).

Almost surely, 2^142631403 is an apocalyptic number.

142631403 is a deficient number, since it is larger than the sum of its proper divisors (56452629).

142631403 is a wasteful number, since it uses less digits than its factorization.

142631403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21706.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 142631403 is about 11942.8389840942. The cubic root of 142631403 is about 522.4824630302.

Adding to 142631403 its reverse (304136241), we get a palindrome (446767644).

The spelling of 142631403 in words is "one hundred forty-two million, six hundred thirty-one thousand, four hundred three".