42654019 has 4 divisors (see below), whose sum is σ = 42683760. Its totient is φ = 42624280.

The previous prime is 42654013. The next prime is 42654023. The reversal of 42654019 is 91045624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42654019 - 2³ = 42654011 is a prime.

It is a super-2 number, since 2×42654019² = 3638730673704722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42654011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12604 + ... + 15625.

It is an arithmetic number, because the mean of its divisors is an integer number (10670940).

Almost surely, 2^42654019 is an apocalyptic number.

42654019 is a deficient number, since it is larger than the sum of its proper divisors (29741).

42654019 is a wasteful number, since it uses less digits than its factorization.

42654019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29740.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 42654019 is about 6531.0044403598. The cubic root of 42654019 is about 349.3976551244.

It can be divided in two parts, 426 and 54019, that added together give a palindrome (54445).

The spelling of 42654019 in words is "forty-two million, six hundred fifty-four thousand, nineteen".