1401403140 has 192 divisors, whose sum is σ = 4627526400. Its totient is φ = 351101952.

The previous prime is 1401403139. The next prime is 1401403141. The reversal of 1401403140 is 413041041.

It is an interprime number because it is at equal distance from previous prime (1401403139) and next prime (1401403141).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1401403141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1405122 + ... + 1406118.

It is an arithmetic number, because the mean of its divisors is an integer number (24101700).

Almost surely, 2^1401403140 is an apocalyptic number.

1401403140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401403140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2313763200).

1401403140 is an abundant number, since it is smaller than the sum of its proper divisors (3226123260).

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

1401403140 is a wasteful number, since it uses less digits than its factorization.

1401403140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1401403140 is about 37435.3194189658. The cubic root of 1401403140 is about 1119.0625499611.

Adding to 1401403140 its reverse (413041041), we get a palindrome (1814444181).

The spelling of 1401403140 in words is "one billion, four hundred one million, four hundred three thousand, one hundred forty".