1140542120 has 32 divisors (see below), whose sum is σ = 2595061800. Its totient is φ = 451089408.

The previous prime is 1140542113. The next prime is 1140542129. The reversal of 1140542120 is 212450411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 787026916 + 353515204 = 28054^2 + 18802^2 .

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 = 1140542092 and 1140542101.

It is not an unprimeable number, because it can be changed into a prime (1140542129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156629 + ... + 163748.

Almost surely, 2^1140542120 is an apocalyptic number.

1140542120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140542120 is an abundant number, since it is smaller than the sum of its proper divisors (1454519680).

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

1140542120 is a wasteful number, since it uses less digits than its factorization.

1140542120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320477 (or 320473 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1140542120 is about 33771.9131824065. The cubic root of 1140542120 is about 1044.8094919156.

Adding to 1140542120 its reverse (212450411), we get a palindrome (1352992531).

The spelling of 1140542120 in words is "one billion, one hundred forty million, five hundred forty-two thousand, one hundred twenty".