1146442421 has 2 divisors, whose sum is σ = 1146442422. Its totient is φ = 1146442420.

The previous prime is 1146442411. The next prime is 1146442457. The reversal of 1146442421 is 1242446411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980316100 + 166126321 = 31310^2 + 12889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146442421 - 2²⁶ = 1079333557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1146442411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573221210 + 573221211.

It is an arithmetic number, because the mean of its divisors is an integer number (573221211).

Almost surely, 2^1146442421 is an apocalyptic number.

It is an amenable number.

1146442421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146442421 is an equidigital number, since it uses as much as digits as its factorization.

1146442421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 29.

The square root of 1146442421 is about 33859.1556451132. The cubic root of 1146442421 is about 1046.6080782631.

Adding to 1146442421 its reverse (1242446411), we get a palindrome (2388888832).

The spelling of 1146442421 in words is "one billion, one hundred forty-six million, four hundred forty-two thousand, four hundred twenty-one".