142137378 has 24 divisors (see below), whose sum is σ = 321355008. Its totient is φ = 45319032.

The previous prime is 142137377. The next prime is 142137383. The reversal of 142137378 is 873731241.

It is not an unprimeable number, because it can be changed into a prime (142137377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171250 + ... + 172077.

It is an arithmetic number, because the mean of its divisors is an integer number (13389792).

Almost surely, 2^142137378 is an apocalyptic number.

142137378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

142137378 is an abundant number, since it is smaller than the sum of its proper divisors (179217630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142137378 is a wasteful number, since it uses less digits than its factorization.

142137378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343358 (or 343355 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 142137378 is about 11922.1381471614. The cubic root of 142137378 is about 521.8785334146.

The spelling of 142137378 in words is "one hundred forty-two million, one hundred thirty-seven thousand, three hundred seventy-eight".