1401233240 has 48 divisors (see below), whose sum is σ = 3465458640. Its totient is φ = 509537600.

The previous prime is 1401233233. The next prime is 1401233269. The reversal of 1401233240 is 423321041.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139916 + ... + 149595.

It is an arithmetic number, because the mean of its divisors is an integer number (72197055).

Almost surely, 2^1401233240 is an apocalyptic number.

1401233240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401233240 is an abundant number, since it is smaller than the sum of its proper divisors (2064225400).

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

1401233240 is a wasteful number, since it uses less digits than its factorization.

1401233240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289544 (or 289529 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1401233240 is about 37433.0501028169. The cubic root of 1401233240 is about 1119.0173247137.

Adding to 1401233240 its reverse (423321041), we get a palindrome (1824554281).

The spelling of 1401233240 in words is "one billion, four hundred one million, two hundred thirty-three thousand, two hundred forty".