1401254149 has 2 divisors, whose sum is σ = 1401254150. Its totient is φ = 1401254148.

The previous prime is 1401254137. The next prime is 1401254167. The reversal of 1401254149 is 9414521041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711929124 + 689325025 = 26682^2 + 26255^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401254149 - 2⁵ = 1401254117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1401254149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401554149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700627074 + 700627075.

It is an arithmetic number, because the mean of its divisors is an integer number (700627075).

Almost surely, 2^1401254149 is an apocalyptic number.

It is an amenable number.

1401254149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401254149 is an equidigital number, since it uses as much as digits as its factorization.

1401254149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1401254149 is about 37433.3293870583. The cubic root of 1401254149 is about 1119.0228906243.

The spelling of 1401254149 in words is "one billion, four hundred one million, two hundred fifty-four thousand, one hundred forty-nine".