146942640 has 160 divisors (see below), whose sum is σ = 545173440. Its totient is φ = 36163584.

The previous prime is 146942639. The next prime is 146942671. The reversal of 146942640 is 46249641.

146942640 is a `hidden beast` number, since 1 + 4 + 6 + 9 + 4 + 2 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 146942595 and 146942604.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25464 + ... + 30696.

It is an arithmetic number, because the mean of its divisors is an integer number (3407334).

Almost surely, 2^146942640 is an apocalyptic number.

146942640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146942640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272586720).

146942640 is an abundant number, since it is smaller than the sum of its proper divisors (398230800).

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

146942640 is a wasteful number, since it uses less digits than its factorization.

146942640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268 (or 5256 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 146942640 is about 12121.9899356500. The cubic root of 146942640 is about 527.6945547405.

The spelling of 146942640 in words is "one hundred forty-six million, nine hundred forty-two thousand, six hundred forty".