42450451 has 2 divisors, whose sum is σ = 42450452. Its totient is φ = 42450450.

The previous prime is 42450391. The next prime is 42450487. The reversal of 42450451 is 15405424.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42450451 - 2¹¹ = 42448403 is a prime.

It is not a weakly prime, because it can be changed into another prime (42450491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21225225 + 21225226.

It is an arithmetic number, because the mean of its divisors is an integer number (21225226).

Almost surely, 2^42450451 is an apocalyptic number.

42450451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42450451 is an equidigital number, since it uses as much as digits as its factorization.

42450451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 42450451 is about 6515.4010620989. The cubic root of 42450451 is about 348.8409304567.

Adding to 42450451 its reverse (15405424), we get a palindrome (57855875).

The spelling of 42450451 in words is "forty-two million, four hundred fifty thousand, four hundred fifty-one".