1401592121 has 2 divisors, whose sum is σ = 1401592122. Its totient is φ = 1401592120.

The previous prime is 1401592109. The next prime is 1401592139. The reversal of 1401592121 is 1212951041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837292096 + 564300025 = 28936^2 + 23755^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401592121 - 2¹⁰ = 1401591097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1401592151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700796060 + 700796061.

It is an arithmetic number, because the mean of its divisors is an integer number (700796061).

Almost surely, 2^1401592121 is an apocalyptic number.

It is an amenable number.

1401592121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401592121 is an equidigital number, since it uses as much as digits as its factorization.

1401592121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1401592121 is about 37437.8434341510. The cubic root of 1401592121 is about 1119.1128500373.

The spelling of 1401592121 in words is "one billion, four hundred one million, five hundred ninety-two thousand, one hundred twenty-one".