1101401040 has 160 divisors (see below), whose sum is σ = 3523274496. Its totient is φ = 284446720.

The previous prime is 1101401039. The next prime is 1101401071. The reversal of 1101401040 is 401041011.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 1701997 + ... + 1702643.

Almost surely, 2^1101401040 is an apocalyptic number.

1101401040 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 1101401040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761637248).

1101401040 is an abundant number, since it is smaller than the sum of its proper divisors (2421873456).

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

1101401040 is a wasteful number, since it uses less digits than its factorization.

1101401040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1101401040 is about 33187.3626550830. The cubic root of 1101401040 is about 1032.7181918636.

Adding to 1101401040 its reverse (401041011), we get a palindrome (1502442051).

The spelling of 1101401040 in words is "one billion, one hundred one million, four hundred one thousand, forty".