19407442 has 8 divisors (see below), whose sum is σ = 29145600. Its totient is φ = 9692244.

The previous prime is 19407439. The next prime is 19407449. The reversal of 19407442 is 24470491.

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

It is not an unprimeable number, because it can be changed into a prime (19407449) 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, 3442 + ... + 7117.

It is an arithmetic number, because the mean of its divisors is an integer number (3643200).

Almost surely, 2^19407442 is an apocalyptic number.

19407442 is a deficient number, since it is larger than the sum of its proper divisors (9738158).

19407442 is a wasteful number, since it uses less digits than its factorization.

19407442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11480.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 19407442 is about 4405.3878376370. The cubic root of 19407442 is about 268.7340922980.

The spelling of 19407442 in words is "nineteen million, four hundred seven thousand, four hundred forty-two".