1042246491 has 24 divisors (see below), whose sum is σ = 1641589056. Its totient is φ = 583071840.

The previous prime is 1042246487. The next prime is 1042246519. The reversal of 1042246491 is 1946422401.

It is not a de Polignac number, because 1042246491 - 2² = 1042246487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1042246411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87865 + ... + 99018.

It is an arithmetic number, because the mean of its divisors is an integer number (68399544).

Almost surely, 2^1042246491 is an apocalyptic number.

1042246491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1042246491 is a deficient number, since it is larger than the sum of its proper divisors (599342565).

1042246491 is a wasteful number, since it uses less digits than its factorization.

1042246491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186923 (or 186910 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1042246491 is about 32283.8425686906. The cubic root of 1042246491 is about 1013.8883835065. Note that the first 3 decimals are identical.

Adding to 1042246491 its reverse (1946422401), we get a palindrome (2988668892).

The spelling of 1042246491 in words is "one billion, forty-two million, two hundred forty-six thousand, four hundred ninety-one".