402120101021204 has 6 divisors (see below), whose sum is σ = 703710176787114. Its totient is φ = 201060050510600.

The previous prime is 402120101021159. The next prime is 402120101021257.

402120101021204 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 229758597684100 + 172361503337104 = 15157790^2 + 13128652^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50265012627647 + ... + 50265012627654.

It is an arithmetic number, because the mean of its divisors is an integer number (117285029464519).

Almost surely, 2^{402120101021204} is an apocalyptic number.

It is an amenable number.

402120101021204 is a deficient number, since it is larger than the sum of its proper divisors (301590075765910).

402120101021204 is a wasteful number, since it uses less digits than its factorization.

402120101021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100530025255305 (or 100530025255303 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

It can be divided in two parts, 40212010 and 1021204, that added together give a palindrome (41233214).

The spelling of 402120101021204 in words is "four hundred two trillion, one hundred twenty billion, one hundred one million, twenty-one thousand, two hundred four".