42427499923 has 2 divisors, whose sum is σ = 42427499924. Its totient is φ = 42427499922.

The previous prime is 42427499897. The next prime is 42427499927. The reversal of 42427499923 is 32999472424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42427499923 - 2¹³ = 42427491731 is a prime.

It is not a weakly prime, because it can be changed into another prime (42427499927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21213749961 + 21213749962.

It is an arithmetic number, because the mean of its divisors is an integer number (21213749962).

Almost surely, 2^42427499923 is an apocalyptic number.

42427499923 is a deficient number, since it is larger than the sum of its proper divisors (1).

42427499923 is an equidigital number, since it uses as much as digits as its factorization.

42427499923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 55.

The spelling of 42427499923 in words is "forty-two billion, four hundred twenty-seven million, four hundred ninety-nine thousand, nine hundred twenty-three".