1250420469 has 4 divisors (see below), whose sum is σ = 1667227296. Its totient is φ = 833613644.

The previous prime is 1250420459. The next prime is 1250420503. The reversal of 1250420469 is 9640240521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1250420469 - 2¹² = 1250416373 is a prime.

It is a super-2 number, since 2×1250420469² = 3127102698588359922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250420449) 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, 208403409 + ... + 208403414.

It is an arithmetic number, because the mean of its divisors is an integer number (416806824).

Almost surely, 2^1250420469 is an apocalyptic number.

It is an amenable number.

1250420469 is a deficient number, since it is larger than the sum of its proper divisors (416806827).

1250420469 is an equidigital number, since it uses as much as digits as its factorization.

1250420469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416806826.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1250420469 is about 35361.2848889856. The cubic root of 1250420469 is about 1077.3381145423.

The spelling of 1250420469 in words is "one billion, two hundred fifty million, four hundred twenty thousand, four hundred sixty-nine".