1091124642 has 32 divisors (see below), whose sum is σ = 2223547200. Its totient is φ = 356849408.

The previous prime is 1091124611. The next prime is 1091124659. The reversal of 1091124642 is 2464211901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198718 + ... + 204134.

It is an arithmetic number, because the mean of its divisors is an integer number (69485850).

Almost surely, 2^1091124642 is an apocalyptic number.

1091124642 is an abundant number, since it is smaller than the sum of its proper divisors (1132422558).

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

1091124642 is a wasteful number, since it uses less digits than its factorization.

1091124642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6050.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1091124642 is about 33032.1758593042. The cubic root of 1091124642 is about 1029.4962950127.

It can be divided in two parts, 10911 and 24642, that multiplied together give a palindrome (268868862).

The spelling of 1091124642 in words is "one billion, ninety-one million, one hundred twenty-four thousand, six hundred forty-two".