1002129049 has 2 divisors, whose sum is σ = 1002129050. Its totient is φ = 1002129048.

The previous prime is 1002129031. The next prime is 1002129071. The reversal of 1002129049 is 9409212001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 995718025 + 6411024 = 31555^2 + 2532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002129049 - 2¹⁷ = 1001997977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1008129049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501064524 + 501064525.

It is an arithmetic number, because the mean of its divisors is an integer number (501064525).

Almost surely, 2^1002129049 is an apocalyptic number.

It is an amenable number.

1002129049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002129049 is an equidigital number, since it uses as much as digits as its factorization.

1002129049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1002129049 is about 31656.4219235213. The cubic root of 1002129049 is about 1000.7091799449.

The spelling of 1002129049 in words is "one billion, two million, one hundred twenty-nine thousand, forty-nine".