142294878 has 24 divisors (see below), whose sum is σ = 336333816. Its totient is φ = 43119600.

The previous prime is 142294871. The next prime is 142294921. The reversal of 142294878 is 878492241.

142294878 is a `hidden beast` number, since 142 + 29 + 487 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142294871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 359133 + ... + 359528.

It is an arithmetic number, because the mean of its divisors is an integer number (14013909).

Almost surely, 2^142294878 is an apocalyptic number.

142294878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

142294878 is an abundant number, since it is smaller than the sum of its proper divisors (194038938).

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

142294878 is a wasteful number, since it uses less digits than its factorization.

142294878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718680 (or 718677 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 142294878 is about 11928.7416771426. The cubic root of 142294878 is about 522.0712238218.

The spelling of 142294878 in words is "one hundred forty-two million, two hundred ninety-four thousand, eight hundred seventy-eight".