142137446 has 32 divisors (see below), whose sum is σ = 239234688. Its totient is φ = 62778240.

The previous prime is 142137427. The next prime is 142137481. The reversal of 142137446 is 644731241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328046 + ... + 328478.

It is an arithmetic number, because the mean of its divisors is an integer number (7476084).

Almost surely, 2^142137446 is an apocalyptic number.

142137446 is a deficient number, since it is larger than the sum of its proper divisors (97097242).

142137446 is a wasteful number, since it uses less digits than its factorization.

142137446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836.

The product of its digits is 16128, while the sum is 32.

The square root of 142137446 is about 11922.1409989985. The cubic root of 142137446 is about 521.8786166386.

Adding to 142137446 its reverse (644731241), we get a palindrome (786868687).

The spelling of 142137446 in words is "one hundred forty-two million, one hundred thirty-seven thousand, four hundred forty-six".