1245154 has 4 divisors (see below), whose sum is σ = 1867734. Its totient is φ = 622576.

The previous prime is 1245149. The next prime is 1245169. The reversal of 1245154 is 4515421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4515421 = 17 ⋅265613.

It can be written as a sum of positive squares in only one way, i.e., 762129 + 483025 = 873^2 + 695^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311287 + ... + 311290.

2^1245154 is an apocalyptic number.

1245154 is a deficient number, since it is larger than the sum of its proper divisors (622580).

1245154 is an equidigital number, since it uses as much as digits as its factorization.

1245154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622579.

The product of its digits is 800, while the sum is 22.

The square root of 1245154 is about 1115.8646871373. The cubic root of 1245154 is about 107.5823490161.

The spelling of 1245154 in words is "one million, two hundred forty-five thousand, one hundred fifty-four".