402221411021429 has 8 divisors (see below), whose sum is σ = 406369553233560. Its totient is φ = 398073300028416.

The previous prime is 402221411021393. The next prime is 402221411021569. The reversal of 402221411021429 is 924120114122204.

It can be written as a sum of positive squares in 4 ways, for example, as 10145849415025 + 392075561606404 = 3185255^2 + 19800898^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402221411021429 - 2²⁰ = 402221409972853 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 (402221411021929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18552347 + ... + 33891479.

It is an arithmetic number, because the mean of its divisors is an integer number (50796194154195).

Almost surely, 2^{402221411021429} is an apocalyptic number.

It is an amenable number.

402221411021429 is a deficient number, since it is larger than the sum of its proper divisors (4148142212131).

402221411021429 is a wasteful number, since it uses less digits than its factorization.

402221411021429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15609559.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 402221411021429 in words is "four hundred two trillion, two hundred twenty-one billion, four hundred eleven million, twenty-one thousand, four hundred twenty-nine".