1246022161 has 8 divisors (see below), whose sum is σ = 1261335240. Its totient is φ = 1230738432.

The previous prime is 1246022143. The next prime is 1246022177. The reversal of 1246022161 is 1612206421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 487570561 + 758451600 = 22081^2 + 27540^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1246022161 - 2²¹ = 1243925009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1246020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85161 + ... + 98713.

It is an arithmetic number, because the mean of its divisors is an integer number (157666905).

Almost surely, 2^1246022161 is an apocalyptic number.

It is an amenable number.

1246022161 is a deficient number, since it is larger than the sum of its proper divisors (15313079).

1246022161 is a wasteful number, since it uses less digits than its factorization.

1246022161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14675.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1246022161 is about 35299.0390945703. The cubic root of 1246022161 is about 1076.0734648665.

Adding to 1246022161 its reverse (1612206421), we get a palindrome (2858228582).

The spelling of 1246022161 in words is "one billion, two hundred forty-six million, twenty-two thousand, one hundred sixty-one".