42607391 has 2 divisors, whose sum is σ = 42607392. Its totient is φ = 42607390.

The previous prime is 42607379. The next prime is 42607403. The reversal of 42607391 is 19370624.

It is a balanced prime because it is at equal distance from previous prime (42607379) and next prime (42607403).

It is a cyclic number.

It is not a de Polignac number, because 42607391 - 2¹⁰ = 42606367 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42604391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21303695 + 21303696.

It is an arithmetic number, because the mean of its divisors is an integer number (21303696).

Almost surely, 2^42607391 is an apocalyptic number.

42607391 is a deficient number, since it is larger than the sum of its proper divisors (1).

42607391 is an equidigital number, since it uses as much as digits as its factorization.

42607391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 42607391 is about 6527.4337223751. The cubic root of 42607391 is about 349.2702919483.

The spelling of 42607391 in words is "forty-two million, six hundred seven thousand, three hundred ninety-one".