1401102440 has 16 divisors (see below), whose sum is σ = 3152480580. Its totient is φ = 560440960.

The previous prime is 1401102419. The next prime is 1401102449. The reversal of 1401102440 is 442011041.

It can be written as a sum of positive squares in 2 ways, for example, as 1399807396 + 1295044 = 37414^2 + 1138^2 .

It is not an unprimeable number, because it can be changed into a prime (1401102449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17513741 + ... + 17513820.

Almost surely, 2^1401102440 is an apocalyptic number.

1401102440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401102440 is an abundant number, since it is smaller than the sum of its proper divisors (1751378140).

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

1401102440 is a wasteful number, since it uses less digits than its factorization.

1401102440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35027572 (or 35027568 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1401102440 is about 37431.3029428579. The cubic root of 1401102440 is about 1118.9825049049.

Adding to 1401102440 its reverse (442011041), we get a palindrome (1843113481).

The spelling of 1401102440 in words is "one billion, four hundred one million, one hundred two thousand, four hundred forty".