2142019 has 4 divisors (see below), whose sum is σ = 2336760.
Its totient is φ = 1947280.
The previous prime is 2142001. The next prime is 2142029. The reversal of 2142019 is 9102412.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 2142019 - 25 = 2141987 is a prime.
It is a super-2 number, since 2×21420192 = 9176490792722, which contains 22 as substring.
It is an Ulam number.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 2141987 and 2142005.
It is not an unprimeable number, because it can be changed into a prime (2142029) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97354 + ... + 97375.
It is an arithmetic number, because the mean of its divisors is an integer number (584190).
22142019 is an apocalyptic number.
2142019 is a deficient number, since it is larger than the sum of its proper divisors (194741).
2142019 is a wasteful number, since it uses less digits than its factorization.
2142019 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 194740.
The product of its (nonzero) digits is 144, while the sum is 19.
The square root of 2142019 is about 1463.5638011375.
The cubic root of 2142019 is about 128.9063880268.
The spelling of 2142019 in words is "two million, one hundred forty-two thousand, nineteen".