42291383 has 2 divisors, whose sum is σ = 42291384. Its totient is φ = 42291382.

The previous prime is 42291371. The next prime is 42291391. The reversal of 42291383 is 38319224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42291383 is a prime.

It is a super-2 number, since 2×42291383² = 3577122152105378, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42291083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21145691 + 21145692.

It is an arithmetic number, because the mean of its divisors is an integer number (21145692).

Almost surely, 2^42291383 is an apocalyptic number.

42291383 is a deficient number, since it is larger than the sum of its proper divisors (1).

42291383 is an equidigital number, since it uses as much as digits as its factorization.

42291383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 42291383 is about 6503.1825285778. The cubic root of 42291383 is about 348.4046658906.

The spelling of 42291383 in words is "forty-two million, two hundred ninety-one thousand, three hundred eighty-three".