61005429 has 12 divisors (see below), whose sum is σ = 89564332. Its totient is φ = 40003200.

The previous prime is 61005419. The next prime is 61005457. The reversal of 61005429 is 92450016.

61005429 is a `hidden beast` number, since 610 + 0 + 5 + 42 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14424804 + 46580625 = 3798^2 + 6825^2 .

It is not a de Polignac number, because 61005429 - 2⁵ = 61005397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61005419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55012 + ... + 56109.

Almost surely, 2^61005429 is an apocalyptic number.

It is an amenable number.

61005429 is a deficient number, since it is larger than the sum of its proper divisors (28558903).

61005429 is a wasteful number, since it uses less digits than its factorization.

61005429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111188 (or 111185 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61005429 is about 7810.5972242845. The cubic root of 61005429 is about 393.6613962388.

The spelling of 61005429 in words is "sixty-one million, five thousand, four hundred twenty-nine".