1405212924 has 12 divisors (see below), whose sum is σ = 3278830184. Its totient is φ = 468404304.

The previous prime is 1405212923. The next prime is 1405212931. The reversal of 1405212924 is 4292125041.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1405212891 and 1405212900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405212923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58550527 + ... + 58550550.

Almost surely, 2^1405212924 is an apocalyptic number.

It is an amenable number.

1405212924 is an abundant number, since it is smaller than the sum of its proper divisors (1873617260).

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

1405212924 is a wasteful number, since it uses less digits than its factorization.

1405212924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117101084 (or 117101082 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1405212924 is about 37486.1697696631. The cubic root of 1405212924 is about 1120.0757081051.

Adding to 1405212924 its reverse (4292125041), we get a palindrome (5697337965).

The spelling of 1405212924 in words is "one billion, four hundred five million, two hundred twelve thousand, nine hundred twenty-four".