42291451 has 2 divisors, whose sum is σ = 42291452. Its totient is φ = 42291450.

The previous prime is 42291443. The next prime is 42291479. The reversal of 42291451 is 15419224.

42291451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (42291479) can be obtained adding 42291451 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42291451 - 2³ = 42291443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42291401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21145725 + 21145726.

It is an arithmetic number, because the mean of its divisors is an integer number (21145726).

Almost surely, 2^42291451 is an apocalyptic number.

42291451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42291451 is an equidigital number, since it uses as much as digits as its factorization.

42291451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 42291451 is about 6503.1877567851. The cubic root of 42291451 is about 348.4048526229.

The spelling of 42291451 in words is "forty-two million, two hundred ninety-one thousand, four hundred fifty-one".