19962542 has 4 divisors (see below), whose sum is σ = 29943816. Its totient is φ = 9981270.

The previous prime is 19962541. The next prime is 19962571. The reversal of 19962542 is 24526991.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 19962496 and 19962505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19962541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4990634 + ... + 4990637.

It is an arithmetic number, because the mean of its divisors is an integer number (7485954).

Almost surely, 2^19962542 is an apocalyptic number.

19962542 is a deficient number, since it is larger than the sum of its proper divisors (9981274).

19962542 is an equidigital number, since it uses as much as digits as its factorization.

19962542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9981273.

The product of its digits is 38880, while the sum is 38.

The square root of 19962542 is about 4467.9460605518. The cubic root of 19962542 is about 271.2721946629.

The spelling of 19962542 in words is "nineteen million, nine hundred sixty-two thousand, five hundred forty-two".