19942667 has 8 divisors (see below), whose sum is σ = 20582016. Its totient is φ = 19308672.

The previous prime is 19942661. The next prime is 19942673. The reversal of 19942667 is 76624991.

It is an interprime number because it is at equal distance from previous prime (19942661) and next prime (19942673).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19942667 - 2⁶ = 19942603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19942661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7043 + ... + 9459.

It is an arithmetic number, because the mean of its divisors is an integer number (2572752).

Almost surely, 2^19942667 is an apocalyptic number.

19942667 is a deficient number, since it is larger than the sum of its proper divisors (639349).

19942667 is a wasteful number, since it uses less digits than its factorization.

19942667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677.

The product of its digits is 163296, while the sum is 44.

The square root of 19942667 is about 4465.7213303116. The cubic root of 19942667 is about 271.1821372418.

The spelling of 19942667 in words is "nineteen million, nine hundred forty-two thousand, six hundred sixty-seven".