29200421 has 2 divisors, whose sum is σ = 29200422. Its totient is φ = 29200420.

The previous prime is 29200411. The next prime is 29200427. The reversal of 29200421 is 12400292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25140196 + 4060225 = 5014^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 29200421 - 2¹⁴ = 29184037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 29200393 and 29200402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29200427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14600210 + 14600211.

It is an arithmetic number, because the mean of its divisors is an integer number (14600211).

Almost surely, 2^29200421 is an apocalyptic number.

It is an amenable number.

29200421 is a deficient number, since it is larger than the sum of its proper divisors (1).

29200421 is an equidigital number, since it uses as much as digits as its factorization.

29200421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 29200421 is about 5403.7413890748. The cubic root of 29200421 is about 307.9378247747.

The spelling of 29200421 in words is "twenty-nine million, two hundred thousand, four hundred twenty-one".