490129050121 has 8 divisors (see below), whose sum is σ = 504988120904. Its totient is φ = 475490113920.

The previous prime is 490129050109. The next prime is 490129050137. The reversal of 490129050121 is 121050921094.

It can be written as a sum of positive squares in 4 ways, for example, as 81250652025 + 408878398096 = 285045^2 + 639436^2 .

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 490129050121 - 2¹⁹ = 490128525833 is a prime.

It is a super-2 number, since 2×490129050121² (a number of 24 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490129051121) 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, 55029126 + ... + 55038031.

It is an arithmetic number, because the mean of its divisors is an integer number (63123515113).

Almost surely, 2^490129050121 is an apocalyptic number.

It is an amenable number.

490129050121 is a deficient number, since it is larger than the sum of its proper divisors (14859070783).

490129050121 is a wasteful number, since it uses less digits than its factorization.

490129050121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110067291.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 490129050121 in words is "four hundred ninety billion, one hundred twenty-nine million, fifty thousand, one hundred twenty-one".