1401152540 has 24 divisors (see below), whose sum is σ = 2968464240. Its totient is φ = 555500288.

The previous prime is 1401152521. The next prime is 1401152561. The reversal of 1401152540 is 452511041.

It is a super-3 number, since 3×1401152540³ (a number of 28 digits) contains 333 as substring.

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, 307730 + ... + 312249.

It is an arithmetic number, because the mean of its divisors is an integer number (123686010).

Almost surely, 2^1401152540 is an apocalyptic number.

1401152540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401152540 is an abundant number, since it is smaller than the sum of its proper divisors (1567311700).

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

1401152540 is a wasteful number, since it uses less digits than its factorization.

1401152540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620101 (or 620099 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1401152540 is about 37431.9721628450. The cubic root of 1401152540 is about 1118.9958421060.

Adding to 1401152540 its reverse (452511041), we get a palindrome (1853663581).

The spelling of 1401152540 in words is "one billion, four hundred one million, one hundred fifty-two thousand, five hundred forty".