19621042 has 16 divisors (see below), whose sum is σ = 34457472. Its totient is φ = 8203680.

The previous prime is 19621039. The next prime is 19621051. The reversal of 19621042 is 24012691.

It is a junction number, because it is equal to n+sod(n) for n = 19620998 and 19621016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16518 + ... + 17665.

It is an arithmetic number, because the mean of its divisors is an integer number (2153592).

Almost surely, 2^19621042 is an apocalyptic number.

19621042 is a deficient number, since it is larger than the sum of its proper divisors (14836430).

19621042 is a wasteful number, since it uses less digits than its factorization.

19621042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34233.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 19621042 is about 4429.5645384168. The cubic root of 19621042 is about 269.7164008951.

The spelling of 19621042 in words is "nineteen million, six hundred twenty-one thousand, forty-two".