1401111540 has 96 divisors (see below), whose sum is σ = 4369599360. Its totient is φ = 372722688.

The previous prime is 1401111533. The next prime is 1401111577. The reversal of 1401111540 is 451111041.

1401111540 is a `hidden beast` number, since 14 + 0 + 1 + 111 + 540 = 666.

It is a super-2 number, since 2×1401111540² = 3926227095042343200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236292 + ... + 242148.

It is an arithmetic number, because the mean of its divisors is an integer number (45516660).

Almost surely, 2^1401111540 is an apocalyptic number.

1401111540 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 1401111540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2184799680).

1401111540 is an abundant number, since it is smaller than the sum of its proper divisors (2968487820).

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

1401111540 is a wasteful number, since it uses less digits than its factorization.

1401111540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6318 (or 6310 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1401111540 is about 37431.4244986749. The cubic root of 1401111540 is about 1118.9849274540.

Adding to 1401111540 its reverse (451111041), we get a palindrome (1852222581).

The spelling of 1401111540 in words is "one billion, four hundred one million, one hundred eleven thousand, five hundred forty".