142341501978 has 48 divisors (see below), whose sum is σ = 333965243976. Its totient is φ = 43555397760.

The previous prime is 142341501971. The next prime is 142341501979. The reversal of 142341501978 is 879105143241.

142341501978 is a `hidden beast` number, since 1 + 42 + 3 + 415 + 0 + 197 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 46914260409 + 95427241569 = 216597^2 + 308913^2 .

It is a super-2 number, since 2×142341501978² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142341501971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1638025 + ... + 1722732.

Almost surely, 2^142341501978 is an apocalyptic number.

142341501978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

142341501978 is an abundant number, since it is smaller than the sum of its proper divisors (191623741998).

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

142341501978 is a wasteful number, since it uses less digits than its factorization.

142341501978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360959 (or 3360956 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 142341501978 in words is "one hundred forty-two billion, three hundred forty-one million, five hundred one thousand, nine hundred seventy-eight".