1284402541 has 4 divisors (see below), whose sum is σ = 1284524892. Its totient is φ = 1284280192.

The previous prime is 1284402533. The next prime is 1284402551. The reversal of 1284402541 is 1452044821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1207910025 + 76492516 = 34755^2 + 8746^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284402541 - 2³ = 1284402533 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 (1284402551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43780 + ... + 66973.

It is an arithmetic number, because the mean of its divisors is an integer number (321131223).

Almost surely, 2^1284402541 is an apocalyptic number.

It is an amenable number.

1284402541 is a deficient number, since it is larger than the sum of its proper divisors (122351).

1284402541 is a wasteful number, since it uses less digits than its factorization.

1284402541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122350.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 1284402541 is about 35838.5622060930. The cubic root of 1284402541 is about 1087.0104487180.

The spelling of 1284402541 in words is "one billion, two hundred eighty-four million, four hundred two thousand, five hundred forty-one".