142484731 has 4 divisors (see below), whose sum is σ = 143816472. Its totient is φ = 141152992.

The previous prime is 142484707. The next prime is 142484737. The reversal of 142484731 is 137484241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137484241 = 277 ⋅496333.

It is a cyclic number.

It is not a de Polignac number, because 142484731 - 2¹³ = 142476539 is a prime.

It is a super-2 number, since 2×142484731² = 40603797136284722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142484737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665710 + ... + 665923.

It is an arithmetic number, because the mean of its divisors is an integer number (35954118).

Almost surely, 2^142484731 is an apocalyptic number.

142484731 is a deficient number, since it is larger than the sum of its proper divisors (1331741).

142484731 is a wasteful number, since it uses less digits than its factorization.

142484731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331740.

The product of its digits is 21504, while the sum is 34.

The square root of 142484731 is about 11936.6968211478. The cubic root of 142484731 is about 522.3033069926.

The spelling of 142484731 in words is "one hundred forty-two million, four hundred eighty-four thousand, seven hundred thirty-one".