1401641240 has 32 divisors (see below), whose sum is σ = 3154788000. Its totient is φ = 560461824.

The previous prime is 1401641203. The next prime is 1401641261. The reversal of 1401641240 is 421461041.

It is a happy number.

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, 183416 + ... + 190904.

It is an arithmetic number, because the mean of its divisors is an integer number (98587125).

Almost surely, 2^1401641240 is an apocalyptic number.

1401641240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401641240 is an abundant number, since it is smaller than the sum of its proper divisors (1753146760).

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

1401641240 is a wasteful number, since it uses less digits than its factorization.

1401641240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12179 (or 12175 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1401641240 is about 37438.4994357413. The cubic root of 1401641240 is about 1119.1259230422.

The spelling of 1401641240 in words is "one billion, four hundred one million, six hundred forty-one thousand, two hundred forty".