142503057 has 20 divisors (see below), whose sum is σ = 214772580. Its totient is φ = 94155264.

The previous prime is 142503047. The next prime is 142503073. The reversal of 142503057 is 750305241.

It is a happy number.

142503057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21150801 + 121352256 = 4599^2 + 11016^2 .

It is not a de Polignac number, because 142503057 - 2¹⁶ = 142437521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 142503057.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142503047) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1369 + ... + 16937.

It is an arithmetic number, because the mean of its divisors is an integer number (10738629).

Almost surely, 2^142503057 is an apocalyptic number.

It is an amenable number.

142503057 is a deficient number, since it is larger than the sum of its proper divisors (72269523).

142503057 is a wasteful number, since it uses less digits than its factorization.

142503057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15694 (or 15685 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 142503057 is about 11937.4644292664. The cubic root of 142503057 is about 522.3256984447.

Adding to 142503057 its reverse (750305241), we get a palindrome (892808298).

The spelling of 142503057 in words is "one hundred forty-two million, five hundred three thousand, fifty-seven".