142488477 has 20 divisors (see below), whose sum is σ = 214972956. Its totient is φ = 94046400.

The previous prime is 142488469. The next prime is 142488503. The reversal of 142488477 is 774884241.

It can be written as a sum of positive squares in 2 ways, for example, as 135629316 + 6859161 = 11646^2 + 2619^2 .

It is not a de Polignac number, because 142488477 - 2³ = 142488469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142488077) 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, 528 + ... + 16889.

Almost surely, 2^142488477 is an apocalyptic number.

It is an amenable number.

142488477 is a deficient number, since it is larger than the sum of its proper divisors (72484479).

142488477 is a wasteful number, since it uses less digits than its factorization.

142488477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17530 (or 17521 counting only the distinct ones).

The product of its digits is 401408, while the sum is 45.

The square root of 142488477 is about 11936.8537311973. The cubic root of 142488477 is about 522.3078841639.

The spelling of 142488477 in words is "one hundred forty-two million, four hundred eighty-eight thousand, four hundred seventy-seven".