1040201251 has 4 divisors (see below), whose sum is σ = 1044039904. Its totient is φ = 1036362600.

The previous prime is 1040201233. The next prime is 1040201257. The reversal of 1040201251 is 1521020401.

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

It is a cyclic number.

It is not a de Polignac number, because 1040201251 - 2¹⁷ = 1040070179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040201257) 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, 1918920 + ... + 1919461.

It is an arithmetic number, because the mean of its divisors is an integer number (261009976).

Almost surely, 2^1040201251 is an apocalyptic number.

1040201251 is a deficient number, since it is larger than the sum of its proper divisors (3838653).

1040201251 is an equidigital number, since it uses as much as digits as its factorization.

1040201251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838652.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1040201251 is about 32252.1511065541. The cubic root of 1040201251 is about 1013.2247519588.

Adding to 1040201251 its reverse (1521020401), we get a palindrome (2561221652).

The spelling of 1040201251 in words is "one billion, forty million, two hundred one thousand, two hundred fifty-one".