1405100442 has 16 divisors (see below), whose sum is σ = 2822264640. Its totient is φ = 466356192.

The previous prime is 1405100401. The next prime is 1405100461. The reversal of 1405100442 is 2440015041.

It is a happy number.

It is a super-3 number, since 3×1405100442³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501142 + ... + 503937.

It is an arithmetic number, because the mean of its divisors is an integer number (176391540).

Almost surely, 2^1405100442 is an apocalyptic number.

1405100442 is an abundant number, since it is smaller than the sum of its proper divisors (1417164198).

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

1405100442 is a wasteful number, since it uses less digits than its factorization.

1405100442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005317.

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

The square root of 1405100442 is about 37484.6694263135. The cubic root of 1405100442 is about 1120.0458213609.

Adding to 1405100442 its reverse (2440015041), we get a palindrome (3845115483).

The spelling of 1405100442 in words is "one billion, four hundred five million, one hundred thousand, four hundred forty-two".