1141426661 has 4 divisors (see below), whose sum is σ = 1141550112. Its totient is φ = 1141303212.

The previous prime is 1141426651. The next prime is 1141426679. The reversal of 1141426661 is 1666241411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1666241411 = 1009 ⋅1651379.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1141426661 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 (1141426621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46625 + ... + 66758.

It is an arithmetic number, because the mean of its divisors is an integer number (285387528).

Almost surely, 2^1141426661 is an apocalyptic number.

It is an amenable number.

1141426661 is a deficient number, since it is larger than the sum of its proper divisors (123451).

1141426661 is a wasteful number, since it uses less digits than its factorization.

1141426661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123450.

The product of its digits is 6912, while the sum is 32.

The square root of 1141426661 is about 33785.0064525671. The cubic root of 1141426661 is about 1045.0795208215.

The spelling of 1141426661 in words is "one billion, one hundred forty-one million, four hundred twenty-six thousand, six hundred sixty-one".