1145421941 has 2 divisors, whose sum is σ = 1145421942. Its totient is φ = 1145421940.

The previous prime is 1145421931. The next prime is 1145421943. The reversal of 1145421941 is 1491245411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1111955716 + 33466225 = 33346^2 + 5785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145421941 - 2⁶ = 1145421877 is a prime.

Together with 1145421943, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1145421898 and 1145421907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145421943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572710970 + 572710971.

It is an arithmetic number, because the mean of its divisors is an integer number (572710971).

Almost surely, 2^1145421941 is an apocalyptic number.

It is an amenable number.

1145421941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145421941 is an equidigital number, since it uses as much as digits as its factorization.

1145421941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 1145421941 is about 33844.0828063046. The cubic root of 1145421941 is about 1046.2974478448.

The spelling of 1145421941 in words is "one billion, one hundred forty-five million, four hundred twenty-one thousand, nine hundred forty-one".