142538445 has 48 divisors (see below), whose sum is σ = 285068160. Its totient is φ = 64536192.

The previous prime is 142538441. The next prime is 142538477. The reversal of 142538445 is 544835241.

It is a happy number.

It is not a de Polignac number, because 142538445 - 2² = 142538441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142538441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31591 + ... + 35819.

It is an arithmetic number, because the mean of its divisors is an integer number (5938920).

Almost surely, 2^142538445 is an apocalyptic number.

142538445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142538445 is a deficient number, since it is larger than the sum of its proper divisors (142529715).

142538445 is a wasteful number, since it uses less digits than its factorization.

142538445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4354 (or 4351 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 142538445 is about 11938.9465615690. The cubic root of 142538445 is about 522.3689315101.

The spelling of 142538445 in words is "one hundred forty-two million, five hundred thirty-eight thousand, four hundred forty-five".