142137478 has 8 divisors (see below), whose sum is σ = 243664272. Its totient is φ = 60916056.

The previous prime is 142137427. The next prime is 142137481. The reversal of 142137478 is 874731241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5076325 + ... + 5076352.

It is an arithmetic number, because the mean of its divisors is an integer number (30458034).

Almost surely, 2^142137478 is an apocalyptic number.

142137478 is a deficient number, since it is larger than the sum of its proper divisors (101526794).

142137478 is a wasteful number, since it uses less digits than its factorization.

142137478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152686.

The product of its digits is 37632, while the sum is 37.

The square root of 142137478 is about 11922.1423410392. The cubic root of 142137478 is about 521.8786558029.

It can be divided in two parts, 142 and 137478, that multiplied together give a triangular number (19521876 = T₆₂₄₈).

The spelling of 142137478 in words is "one hundred forty-two million, one hundred thirty-seven thousand, four hundred seventy-eight".