7219742 has 4 divisors (see below), whose sum is σ = 10829616. Its totient is φ = 3609870.

The previous prime is 7219741. The next prime is 7219757. The reversal of 7219742 is 2479127.

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 = 7219699 and 7219708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7219741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804934 + ... + 1804937.

It is an arithmetic number, because the mean of its divisors is an integer number (2707404).

Almost surely, 2^7219742 is an apocalyptic number.

7219742 is a deficient number, since it is larger than the sum of its proper divisors (3609874).

7219742 is a wasteful number, since it uses less digits than its factorization.

7219742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609873.

The product of its digits is 7056, while the sum is 32.

The square root of 7219742 is about 2686.9577592512. The cubic root of 7219742 is about 193.2742037434.

The spelling of 7219742 in words is "seven million, two hundred nineteen thousand, seven hundred forty-two".