1045145040 has 80 divisors (see below), whose sum is σ = 3430548288. Its totient is φ = 262309888.

The previous prime is 1045145009. The next prime is 1045145053. The reversal of 1045145040 is 405415401.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1045145040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124002 + ... + 132161.

Almost surely, 2^1045145040 is an apocalyptic number.

1045145040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045145040 is an abundant number, since it is smaller than the sum of its proper divisors (2385403248).

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

1045145040 is a wasteful number, since it uses less digits than its factorization.

1045145040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256196 (or 256190 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1045145040 is about 32328.7030361566. The cubic root of 1045145040 is about 1014.8274080260.

The spelling of 1045145040 in words is "one billion, forty-five million, one hundred forty-five thousand, forty".