1405140455 has 16 divisors (see below), whose sum is σ = 1744791840. Its totient is φ = 1085618688.

The previous prime is 1405140437. The next prime is 1405140461. The reversal of 1405140455 is 5540415041.

It is a cyclic number.

It is not a de Polignac number, because 1405140455 - 2⁶ = 1405140391 is a prime.

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, 17582 + ... + 55851.

It is an arithmetic number, because the mean of its divisors is an integer number (109049490).

Almost surely, 2^1405140455 is an apocalyptic number.

1405140455 is a deficient number, since it is larger than the sum of its proper divisors (339651385).

1405140455 is an equidigital number, since it uses as much as digits as its factorization.

1405140455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73570.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1405140455 is about 37485.2031473754. The cubic root of 1405140455 is about 1120.0564530962.

Adding to 1405140455 its reverse (5540415041), we get a palindrome (6945555496).

The spelling of 1405140455 in words is "one billion, four hundred five million, one hundred forty thousand, four hundred fifty-five".