142302487 has 4 divisors (see below), whose sum is σ = 142332120. Its totient is φ = 142272856.

The previous prime is 142302401. The next prime is 142302491. The reversal of 142302487 is 784203241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784203241 = 149 ⋅5263109.

It is a cyclic number.

It is not a de Polignac number, because 142302487 - 2¹⁹ = 141778199 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142302497) 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, 5773 + ... + 17830.

It is an arithmetic number, because the mean of its divisors is an integer number (35583030).

Almost surely, 2^142302487 is an apocalyptic number.

142302487 is a deficient number, since it is larger than the sum of its proper divisors (29633).

142302487 is an equidigital number, since it uses as much as digits as its factorization.

142302487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29632.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 142302487 is about 11929.0606084469. The cubic root of 142302487 is about 522.0805293082.

The spelling of 142302487 in words is "one hundred forty-two million, three hundred two thousand, four hundred eighty-seven".