102001049 has 4 divisors (see below), whose sum is σ = 102025764. Its totient is φ = 101976336.

The previous prime is 102001043. The next prime is 102001051. The reversal of 102001049 is 940100201.

It is a happy number.

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 80425024 + 21576025 = 8968^2 + 4645^2 .

It is a cyclic number.

It is not a de Polignac number, because 102001049 - 2¹² = 101996953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102001043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4502 + ... + 14975.

It is an arithmetic number, because the mean of its divisors is an integer number (25506441).

Almost surely, 2^102001049 is an apocalyptic number.

It is an amenable number.

102001049 is a deficient number, since it is larger than the sum of its proper divisors (24715).

102001049 is an equidigital number, since it uses as much as digits as its factorization.

102001049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24714.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 102001049 is about 10099.5568714672. The cubic root of 102001049 is about 467.2344745532.

The spelling of 102001049 in words is "one hundred two million, one thousand, forty-nine".