1401530540 has 24 divisors (see below), whose sum is σ = 2972359152. Its totient is φ = 555060800.

The previous prime is 1401530527. The next prime is 1401530563. The reversal of 1401530540 is 450351041.

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, 344894 + ... + 348933.

It is an arithmetic number, because the mean of its divisors is an integer number (123848298).

Almost surely, 2^1401530540 is an apocalyptic number.

1401530540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401530540 is an abundant number, since it is smaller than the sum of its proper divisors (1570828612).

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

1401530540 is a wasteful number, since it uses less digits than its factorization.

1401530540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693937 (or 693935 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1401530540 is about 37437.0209819104. The cubic root of 1401530540 is about 1119.0964598439.

Adding to 1401530540 its reverse (450351041), we get a palindrome (1851881581).

The spelling of 1401530540 in words is "one billion, four hundred one million, five hundred thirty thousand, five hundred forty".