19007442 has 12 divisors (see below), whose sum is σ = 41182830. Its totient is φ = 6335808.

The previous prime is 19007437. The next prime is 19007449. The reversal of 19007442 is 24470091.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19000881 + 6561 = 4359^2 + 81^2 .

It is a super-2 number, since 2×19007442² = 722565702766728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19007449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 527967 + ... + 528002.

Almost surely, 2^19007442 is an apocalyptic number.

19007442 is an abundant number, since it is smaller than the sum of its proper divisors (22175388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19007442 is a wasteful number, since it uses less digits than its factorization.

19007442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055977 (or 1055974 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 19007442 is about 4359.7525159119. The cubic root of 19007442 is about 266.8749993510.

The spelling of 19007442 in words is "nineteen million, seven thousand, four hundred forty-two".