142440415 has 32 divisors (see below), whose sum is σ = 189423360. Its totient is φ = 102176256.

The previous prime is 142440349. The next prime is 142440421. The reversal of 142440415 is 514044241.

It is not a de Polignac number, because 142440415 - 2¹³ = 142432223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142440415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 595866 + ... + 596104.

It is an arithmetic number, because the mean of its divisors is an integer number (5919480).

Almost surely, 2^142440415 is an apocalyptic number.

142440415 is a deficient number, since it is larger than the sum of its proper divisors (46982945).

142440415 is a wasteful number, since it uses less digits than its factorization.

142440415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 142440415 is about 11934.8403843537. The cubic root of 142440415 is about 522.2491519654.

Adding to 142440415 its reverse (514044241), we get a palindrome (656484656).

The spelling of 142440415 in words is "one hundred forty-two million, four hundred forty thousand, four hundred fifteen".