42123619 has 2 divisors, whose sum is σ = 42123620. Its totient is φ = 42123618.

The previous prime is 42123593. The next prime is 42123623. The reversal of 42123619 is 91632124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42123619 - 2¹³ = 42115427 is a prime.

It is a super-2 number, since 2×42123619² = 3548798555314322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42123629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061809 + 21061810.

It is an arithmetic number, because the mean of its divisors is an integer number (21061810).

Almost surely, 2^42123619 is an apocalyptic number.

42123619 is a deficient number, since it is larger than the sum of its proper divisors (1).

42123619 is an equidigital number, since it uses as much as digits as its factorization.

42123619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 42123619 is about 6490.2711037367. The cubic root of 42123619 is about 347.9433645227.

The spelling of 42123619 in words is "forty-two million, one hundred twenty-three thousand, six hundred nineteen".