19972141 has 8 divisors (see below), whose sum is σ = 22927680. Its totient is φ = 17042208.

The previous prime is 19972111. The next prime is 19972151. The reversal of 19972141 is 14127991.

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

It is a cyclic number.

It is not a de Polignac number, because 19972141 - 2¹³ = 19963949 is a prime.

It is a super-2 number, since 2×19972141² = 797772832247762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19972097 and 19972106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19972111) 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, 4696 + ... + 7873.

It is an arithmetic number, because the mean of its divisors is an integer number (2865960).

Almost surely, 2^19972141 is an apocalyptic number.

It is an amenable number.

19972141 is a deficient number, since it is larger than the sum of its proper divisors (2955539).

19972141 is a wasteful number, since it uses less digits than its factorization.

19972141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12803.

The product of its digits is 4536, while the sum is 34.

The square root of 19972141 is about 4469.0201386881. The cubic root of 19972141 is about 271.3156681601.

The spelling of 19972141 in words is "nineteen million, nine hundred seventy-two thousand, one hundred forty-one".