42407461 has 2 divisors, whose sum is σ = 42407462. Its totient is φ = 42407460.

The previous prime is 42407441. The next prime is 42407471. The reversal of 42407461 is 16470424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36978561 + 5428900 = 6081^2 + 2330^2 .

It is a cyclic number.

It is not a de Polignac number, because 42407461 - 2⁵ = 42407429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42407441) 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 as a sum of consecutive naturals, namely, 21203730 + 21203731.

It is an arithmetic number, because the mean of its divisors is an integer number (21203731).

Almost surely, 2^42407461 is an apocalyptic number.

It is an amenable number.

42407461 is a deficient number, since it is larger than the sum of its proper divisors (1).

42407461 is an equidigital number, since it uses as much as digits as its factorization.

42407461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 42407461 is about 6512.1011202223. The cubic root of 42407461 is about 348.7231324394.

Adding to 42407461 its reverse (16470424), we get a palindrome (58877885).

The spelling of 42407461 in words is "forty-two million, four hundred seven thousand, four hundred sixty-one".