42736427 has 2 divisors, whose sum is σ = 42736428. Its totient is φ = 42736426.

The previous prime is 42736423. The next prime is 42736457. The reversal of 42736427 is 72463724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42736427 - 2² = 42736423 is a prime.

It is not a weakly prime, because it can be changed into another prime (42736423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21368213 + 21368214.

It is an arithmetic number, because the mean of its divisors is an integer number (21368214).

Almost surely, 2^42736427 is an apocalyptic number.

42736427 is a deficient number, since it is larger than the sum of its proper divisors (1).

42736427 is an equidigital number, since it uses as much as digits as its factorization.

42736427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 35.

The square root of 42736427 is about 6537.3103796592. The cubic root of 42736427 is about 349.6225236489.

The spelling of 42736427 in words is "forty-two million, seven hundred thirty-six thousand, four hundred twenty-seven".