1122540287 has 8 divisors (see below), whose sum is σ = 1264092672. Its totient is φ = 987571800.

The previous prime is 1122540253. The next prime is 1122540301. The reversal of 1122540287 is 7820452211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1122540287 - 2⁸ = 1122540031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122540217) 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, 1645613 + ... + 1646294.

It is an arithmetic number, because the mean of its divisors is an integer number (158011584).

Almost surely, 2^1122540287 is an apocalyptic number.

1122540287 is a deficient number, since it is larger than the sum of its proper divisors (141552385).

1122540287 is a wasteful number, since it uses less digits than its factorization.

1122540287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291949.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 1122540287 is about 33504.3323616514. The cubic root of 1122540287 is about 1039.2833718792.

Adding to 1122540287 its reverse (7820452211), we get a palindrome (8942992498).

The spelling of 1122540287 in words is "one billion, one hundred twenty-two million, five hundred forty thousand, two hundred eighty-seven".