1405242012 has 48 divisors (see below), whose sum is σ = 3307197600. Its totient is φ = 464390400.

The previous prime is 1405242001. The next prime is 1405242023. The reversal of 1405242012 is 2102425041.

It is an interprime number because it is at equal distance from previous prime (1405242001) and next prime (1405242023).

It is a super-2 number, since 2×1405242012² = 3949410224579616288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1405242012.

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, 738262 + ... + 740162.

It is an arithmetic number, because the mean of its divisors is an integer number (68899950).

Almost surely, 2^1405242012 is an apocalyptic number.

1405242012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1405242012 is an abundant number, since it is smaller than the sum of its proper divisors (1901955588).

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

1405242012 is a wasteful number, since it uses less digits than its factorization.

1405242012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406 (or 2404 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1405242012 is about 37486.5577507458. The cubic root of 1405242012 is about 1120.0834365987.

Adding to 1405242012 its reverse (2102425041), we get a palindrome (3507667053).

The spelling of 1405242012 in words is "one billion, four hundred five million, two hundred forty-two thousand, twelve".