61421023 has 2 divisors, whose sum is σ = 61421024. Its totient is φ = 61421022.

The previous prime is 61420991. The next prime is 61421033. The reversal of 61421023 is 32012416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61421023 - 2⁵ = 61420991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61421033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30710511 + 30710512.

It is an arithmetic number, because the mean of its divisors is an integer number (30710512).

Almost surely, 2^61421023 is an apocalyptic number.

61421023 is a deficient number, since it is larger than the sum of its proper divisors (1).

61421023 is an equidigital number, since it uses as much as digits as its factorization.

61421023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 61421023 is about 7837.1565634483. The cubic root of 61421023 is about 394.5533015753.

Adding to 61421023 its reverse (32012416), we get a palindrome (93433439).

The spelling of 61421023 in words is "sixty-one million, four hundred twenty-one thousand, twenty-three".