144166840 has 32 divisors (see below), whose sum is σ = 324822960. Its totient is φ = 57587200.

The previous prime is 144166823. The next prime is 144166853. The reversal of 144166840 is 48661441.

It is a junction number, because it is equal to n+sod(n) for n = 144166796 and 144166805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33195 + ... + 37285.

Almost surely, 2^144166840 is an apocalyptic number.

144166840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144166840 is an abundant number, since it is smaller than the sum of its proper divisors (180656120).

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

144166840 is a wasteful number, since it uses less digits than its factorization.

144166840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4983 (or 4979 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 144166840 is about 12006.9496542627. The cubic root of 144166840 is about 524.3506287202.

The spelling of 144166840 in words is "one hundred forty-four million, one hundred sixty-six thousand, eight hundred forty".