1249478 has 16 divisors (see below), whose sum is σ = 1995840. Its totient is φ = 585000.

The previous prime is 1249477. The next prime is 1249481. The reversal of 1249478 is 8749421.

1249478 = T₁₄₂ + T₁₄₃ + ... + T₂₁₇.

It is a super-2 number, since 2×1249478² = 3122390544968, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4853 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (124740).

2^1249478 is an apocalyptic number.

1249478 is a deficient number, since it is larger than the sum of its proper divisors (746362).

1249478 is a wasteful number, since it uses less digits than its factorization.

1249478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403.

The product of its digits is 16128, while the sum is 35.

The square root of 1249478 is about 1117.8005188762. The cubic root of 1249478 is about 107.7067375484.

The spelling of 1249478 in words is "one million, two hundred forty-nine thousand, four hundred seventy-eight".