240168394420 has 48 divisors (see below), whose sum is σ = 514261733328. Its totient is φ = 94182865920.

The previous prime is 240168394399. The next prime is 240168394441. The reversal of 240168394420 is 24493861042.

It is an interprime number because it is at equal distance from previous prime (240168394399) and next prime (240168394441).

It can be written as a sum of positive squares in 8 ways, for example, as 91278911376 + 148889483044 = 302124^2 + 385862^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314502 + ... + 1486018.

It is an arithmetic number, because the mean of its divisors is an integer number (10713786111).

Almost surely, 2^240168394420 is an apocalyptic number.

240168394420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240168394420 is an abundant number, since it is smaller than the sum of its proper divisors (274093338908).

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

240168394420 is a wasteful number, since it uses less digits than its factorization.

240168394420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172900 (or 172898 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 240168394420 in words is "two hundred forty billion, one hundred sixty-eight million, three hundred ninety-four thousand, four hundred twenty".