1146215421 has 32 divisors (see below), whose sum is σ = 1887728640. Its totient is φ = 682603200.

The previous prime is 1146215377. The next prime is 1146215509. The reversal of 1146215421 is 1245126411.

1146215421 is a `hidden beast` number, since 1 + 14 + 621 + 5 + 4 + 21 = 666.

It is not a de Polignac number, because 1146215421 - 2¹¹ = 1146213373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146215221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41790 + ... + 63551.

It is an arithmetic number, because the mean of its divisors is an integer number (58991520).

Almost surely, 2^1146215421 is an apocalyptic number.

It is an amenable number.

1146215421 is a deficient number, since it is larger than the sum of its proper divisors (741513219).

1146215421 is a wasteful number, since it uses less digits than its factorization.

1146215421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105394 (or 105388 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 1146215421 is about 33855.8033577701. The cubic root of 1146215421 is about 1046.5389962311.

The spelling of 1146215421 in words is "one billion, one hundred forty-six million, two hundred fifteen thousand, four hundred twenty-one".