1140215542 has 4 divisors (see below), whose sum is σ = 1710323316. Its totient is φ = 570107770.

The previous prime is 1140215521. The next prime is 1140215561. The reversal of 1140215542 is 2455120411.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285053884 + ... + 285053887.

It is an arithmetic number, because the mean of its divisors is an integer number (427580829).

Almost surely, 2^1140215542 is an apocalyptic number.

1140215542 is a deficient number, since it is larger than the sum of its proper divisors (570107774).

1140215542 is an equidigital number, since it uses as much as digits as its factorization.

1140215542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570107773.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1140215542 is about 33767.0777829530. The cubic root of 1140215542 is about 1044.7097602878.

Adding to 1140215542 its reverse (2455120411), we get a palindrome (3595335953).

The spelling of 1140215542 in words is "one billion, one hundred forty million, two hundred fifteen thousand, five hundred forty-two".