1081210427 has 16 divisors (see below), whose sum is σ = 1236003840. Its totient is φ = 936196800.

The previous prime is 1081210391. The next prime is 1081210433. The reversal of 1081210427 is 7240121801.

It is not a de Polignac number, because 1081210427 - 2⁶ = 1081210363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1081210396 and 1081210405.

It is not an unprimeable number, because it can be changed into a prime (1081210477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51527 + ... + 69407.

It is an arithmetic number, because the mean of its divisors is an integer number (77250240).

Almost surely, 2^1081210427 is an apocalyptic number.

1081210427 is a deficient number, since it is larger than the sum of its proper divisors (154793413).

1081210427 is a wasteful number, since it uses less digits than its factorization.

1081210427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18154.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1081210427 is about 32881.7643535136. The cubic root of 1081210427 is about 1026.3687213916.

The spelling of 1081210427 in words is "one billion, eighty-one million, two hundred ten thousand, four hundred twenty-seven".