1401458940 has 72 divisors (see below), whose sum is σ = 4858395360. Its totient is φ = 320333184.

The previous prime is 1401458923. The next prime is 1401458951. The reversal of 1401458940 is 498541041.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1401458895 and 1401458904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554875 + ... + 557394.

Almost surely, 2^1401458940 is an apocalyptic number.

1401458940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401458940 is an abundant number, since it is smaller than the sum of its proper divisors (3456936420).

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

1401458940 is a wasteful number, since it uses less digits than its factorization.

1401458940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112291 (or 1112286 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1401458940 is about 37436.0646970271. The cubic root of 1401458940 is about 1119.0774024233.

Adding to 1401458940 its reverse (498541041), we get a palindrome (1899999981).

The spelling of 1401458940 in words is "one billion, four hundred one million, four hundred fifty-eight thousand, nine hundred forty".