742019 has 4 divisors (see below), whose sum is σ = 744744. Its totient is φ = 739296.

The previous prime is 742009. The next prime is 742031. The reversal of 742019 is 910247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910247 = 13 ⋅70019.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742019 is a prime.

It is a super-2 number, since 2×742019² = 1101184392722, 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 = 741985 and 742003.

It is not an unprimeable number, because it can be changed into a prime (742009) 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, 902 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (186186).

2⁷⁴²⁰¹⁹ is an apocalyptic number.

742019 is a deficient number, since it is larger than the sum of its proper divisors (2725).

742019 is a wasteful number, since it uses less digits than its factorization.

742019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 742019 is about 861.4052472559. The cubic root of 742019 is about 90.5326032526.

The spelling of 742019 in words is "seven hundred forty-two thousand, nineteen".