1245471040 has 112 divisors (see below), whose sum is σ = 3284305344. Its totient is φ = 446054400.

The previous prime is 1245470959. The next prime is 1245471043. The reversal of 1245471040 is 401745421.

It is a super-2 number, since 2×1245471040² = 3102396222957363200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245471043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233200 + ... + 238480.

Almost surely, 2^1245471040 is an apocalyptic number.

1245471040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245471040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642152672).

1245471040 is an abundant number, since it is smaller than the sum of its proper divisors (2038834304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245471040 is a wasteful number, since it uses less digits than its factorization.

1245471040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376 (or 5366 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 1245471040 is about 35291.2317722122. The cubic root of 1245471040 is about 1075.9147908183.

The spelling of 1245471040 in words is "one billion, two hundred forty-five million, four hundred seventy-one thousand, forty".