7405429 has 2 divisors, whose sum is σ = 7405430. Its totient is φ = 7405428.

The previous prime is 7405399. The next prime is 7405451. The reversal of 7405429 is 9245047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3908529 + 3496900 = 1977^2 + 1870^2 .

It is a cyclic number.

It is not a de Polignac number, because 7405429 - 2⁵ = 7405397 is a prime.

It is an Ulam number.

7405429 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7405429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7405129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3702714 + 3702715.

It is an arithmetic number, because the mean of its divisors is an integer number (3702715).

Almost surely, 2^7405429 is an apocalyptic number.

It is an amenable number.

7405429 is a deficient number, since it is larger than the sum of its proper divisors (1).

7405429 is an equidigital number, since it uses as much as digits as its factorization.

7405429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 7405429 is about 2721.2917888385. The cubic root of 7405429 is about 194.9171596405.

The spelling of 7405429 in words is "seven million, four hundred five thousand, four hundred twenty-nine".