7042429 has 4 divisors (see below), whose sum is σ = 7096320. Its totient is φ = 6988540.

The previous prime is 7042423. The next prime is 7042457. The reversal of 7042429 is 9242407.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9242407 = 17 ⋅543671.

It is a cyclic number.

It is not a de Polignac number, because 7042429 - 2³ = 7042421 is a prime.

It is a Duffinian number.

7042429 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7042397 and 7042406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7042421) 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, 26749 + ... + 27010.

It is an arithmetic number, because the mean of its divisors is an integer number (1774080).

Almost surely, 2^7042429 is an apocalyptic number.

It is an amenable number.

7042429 is a deficient number, since it is larger than the sum of its proper divisors (53891).

7042429 is a wasteful number, since it uses less digits than its factorization.

7042429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53890.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 7042429 is about 2653.7575247185. The cubic root of 7042429 is about 191.6788340942.

The spelling of 7042429 in words is "seven million, forty-two thousand, four hundred twenty-nine".