1401111432 has 80 divisors (see below), whose sum is σ = 4485053760. Its totient is φ = 400316256.

The previous prime is 1401111403. The next prime is 1401111443. The reversal of 1401111432 is 2341111041.

It is a super-2 number, since 2×1401111432² = 3926226489762181248, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 149908 + ... + 158979.

It is an arithmetic number, because the mean of its divisors is an integer number (56063172).

Almost surely, 2^1401111432 is an apocalyptic number.

1401111432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1401111432 is an abundant number, since it is smaller than the sum of its proper divisors (3083942328).

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

1401111432 is a wasteful number, since it uses less digits than its factorization.

1401111432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308912 (or 308899 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1401111432 is about 37431.4230560368. The cubic root of 1401111432 is about 1118.9848987030.

Adding to 1401111432 its reverse (2341111041), we get a palindrome (3742222473).

The spelling of 1401111432 in words is "one billion, four hundred one million, one hundred eleven thousand, four hundred thirty-two".