402261029 has 2 divisors, whose sum is σ = 402261030. Its totient is φ = 402261028.

The previous prime is 402260981. The next prime is 402261031. The reversal of 402261029 is 920162204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274796929 + 127464100 = 16577^2 + 11290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402261029 is a prime.

Together with 402261031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 402260989 and 402261007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402261049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201130514 + 201130515.

It is an arithmetic number, because the mean of its divisors is an integer number (201130515).

Almost surely, 2^402261029 is an apocalyptic number.

It is an amenable number.

402261029 is a deficient number, since it is larger than the sum of its proper divisors (1).

402261029 is an equidigital number, since it uses as much as digits as its factorization.

402261029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 402261029 is about 20056.4460710266. The cubic root of 402261029 is about 738.1919757962.

The spelling of 402261029 in words is "four hundred two million, two hundred sixty-one thousand, twenty-nine".