142249693 has 16 divisors (see below), whose sum is σ = 152893440. Its totient is φ = 131878656.

The previous prime is 142249673. The next prime is 142249699. The reversal of 142249693 is 396942241.

It is not a de Polignac number, because 142249693 - 2⁵ = 142249661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142249699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595068 + ... + 595306.

It is an arithmetic number, because the mean of its divisors is an integer number (9555840).

Almost surely, 2^142249693 is an apocalyptic number.

It is an amenable number.

142249693 is a deficient number, since it is larger than the sum of its proper divisors (10643747).

142249693 is a wasteful number, since it uses less digits than its factorization.

142249693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 93312, while the sum is 40.

The square root of 142249693 is about 11926.8475717601. The cubic root of 142249693 is about 522.0159576357.

It can be divided in two parts, 1422 and 49693, that added together give a palindrome (51115).

The spelling of 142249693 in words is "one hundred forty-two million, two hundred forty-nine thousand, six hundred ninety-three".