19711042 has 16 divisors (see below), whose sum is σ = 32127480. Its totient is φ = 9015552.

The previous prime is 19711031. The next prime is 19711049. The reversal of 19711042 is 24011791.

It can be written as a sum of positive squares in 4 ways, for example, as 8946081 + 10764961 = 2991^2 + 3281^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19710998 and 19711016.

It is not an unprimeable number, because it can be changed into a prime (19711049) 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, 417 + ... + 6292.

Almost surely, 2^19711042 is an apocalyptic number.

19711042 is a deficient number, since it is larger than the sum of its proper divisors (12416438).

19711042 is a wasteful number, since it uses less digits than its factorization.

19711042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6837.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 19711042 is about 4439.7119275917. The cubic root of 19711042 is about 270.1281604644.

The spelling of 19711042 in words is "nineteen million, seven hundred eleven thousand, forty-two".