42109419 has 16 divisors (see below), whose sum is σ = 62745984. Its totient is φ = 24897600.

The previous prime is 42109409. The next prime is 42109423. The reversal of 42109419 is 91490124.

It is not a de Polignac number, because 42109419 - 2⁸ = 42109163 is a prime.

It is a super-2 number, since 2×42109419² = 3546406337035122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42109409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14209 + ... + 16914.

It is an arithmetic number, because the mean of its divisors is an integer number (3921624).

Almost surely, 2^42109419 is an apocalyptic number.

42109419 is a deficient number, since it is larger than the sum of its proper divisors (20636565).

42109419 is a wasteful number, since it uses less digits than its factorization.

42109419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31178.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 42109419 is about 6489.1770664700. The cubic root of 42109419 is about 347.9042625400.

The spelling of 42109419 in words is "forty-two million, one hundred nine thousand, four hundred nineteen".