1042544091 has 12 divisors (see below), whose sum is σ = 1476638072. Its totient is φ = 654144768.

The previous prime is 1042544089. The next prime is 1042544099. The reversal of 1042544091 is 1904452401.

It is not a de Polignac number, because 1042544091 - 2¹ = 1042544089 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042544099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 600370 + ... + 602103.

Almost surely, 2^1042544091 is an apocalyptic number.

1042544091 is a deficient number, since it is larger than the sum of its proper divisors (434093981).

1042544091 is a wasteful number, since it uses less digits than its factorization.

1042544091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202510 (or 1202493 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1042544091 is about 32288.4513564835. The cubic root of 1042544091 is about 1013.9848752262.

Adding to 1042544091 its reverse (1904452401), we get a palindrome (2946996492).

It can be divided in two parts, 104254 and 4091, that added together give a triangular number (108345 = T₄₆₅).

The spelling of 1042544091 in words is "one billion, forty-two million, five hundred forty-four thousand, ninety-one".