1249068461 has 4 divisors (see below), whose sum is σ = 1289361024. Its totient is φ = 1208775900.

The previous prime is 1249068449. The next prime is 1249068463. The reversal of 1249068461 is 1648609421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1648609421 = 71 ⋅23219851.

It is a cyclic number.

It is not a de Polignac number, because 1249068461 - 2⁶ = 1249068397 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 (1249068463) 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, 20146235 + ... + 20146296.

It is an arithmetic number, because the mean of its divisors is an integer number (322340256).

Almost surely, 2^1249068461 is an apocalyptic number.

It is an amenable number.

1249068461 is a deficient number, since it is larger than the sum of its proper divisors (40292563).

1249068461 is an equidigital number, since it uses as much as digits as its factorization.

1249068461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40292562.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 1249068461 is about 35342.1626531258. The cubic root of 1249068461 is about 1076.9496865242.

The spelling of 1249068461 in words is "one billion, two hundred forty-nine million, sixty-eight thousand, four hundred sixty-one".