1405145212 has 24 divisors (see below), whose sum is σ = 2470415360. Its totient is φ = 699321600.

The previous prime is 1405145197. The next prime is 1405145219. The reversal of 1405145212 is 2125415041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405145219) 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, 1097989 + ... + 1099267.

Almost surely, 2^1405145212 is an apocalyptic number.

It is an amenable number.

1405145212 is a deficient number, since it is larger than the sum of its proper divisors (1065270148).

1405145212 is a wasteful number, since it uses less digits than its factorization.

1405145212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341 (or 2339 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1405145212 is about 37485.2665990253. The cubic root of 1405145212 is about 1120.0577170511.

The spelling of 1405145212 in words is "one billion, four hundred five million, one hundred forty-five thousand, two hundred twelve".