1140404420 has 24 divisors (see below), whose sum is σ = 2396072448. Its totient is φ = 455928800.

The previous prime is 1140404411. The next prime is 1140404431. The reversal of 1140404420 is 244040411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1140404392 and 1140404401.

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, 28715 + ... + 55725.

It is an arithmetic number, because the mean of its divisors is an integer number (99836352).

Almost surely, 2^1140404420 is an apocalyptic number.

1140404420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140404420 is an abundant number, since it is smaller than the sum of its proper divisors (1255668028).

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

1140404420 is a wasteful number, since it uses less digits than its factorization.

1140404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29131 (or 29129 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1140404420 is about 33769.8744445401. The cubic root of 1140404420 is about 1044.7674428891.

Adding to 1140404420 its reverse (244040411), we get a palindrome (1384444831).

The spelling of 1140404420 in words is "one billion, one hundred forty million, four hundred four thousand, four hundred twenty".