29045421 has 6 divisors (see below), whose sum is σ = 41954510. Its totient is φ = 19363608.

The previous prime is 29045411. The next prime is 29045441. The reversal of 29045421 is 12454092.

It can be written as a sum of positive squares in only one way, i.e., 21261321 + 7784100 = 4611^2 + 2790^2 .

It is not a de Polignac number, because 29045421 - 2¹⁵ = 29012653 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 (29045411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1613626 + ... + 1613643.

Almost surely, 2^29045421 is an apocalyptic number.

It is an amenable number.

29045421 is a deficient number, since it is larger than the sum of its proper divisors (12909089).

29045421 is a wasteful number, since it uses less digits than its factorization.

29045421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227275 (or 3227272 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 29045421 is about 5389.3803911025. The cubic root of 29045421 is about 307.3919985579.

The spelling of 29045421 in words is "twenty-nine million, forty-five thousand, four hundred twenty-one".