1354140405 has 24 divisors (see below), whose sum is σ = 2355551640. Its totient is φ = 719631360.

The previous prime is 1354140383. The next prime is 1354140409. The reversal of 1354140405 is 5040414531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 42107121 + 1312033284 = 6489^2 + 36222^2 .

It is not a de Polignac number, because 1354140405 - 2¹⁴ = 1354124021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1354140409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40900 + ... + 66189.

It is an arithmetic number, because the mean of its divisors is an integer number (98147985).

Almost surely, 2^1354140405 is an apocalyptic number.

1354140405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1354140405 is a deficient number, since it is larger than the sum of its proper divisors (1001411235).

1354140405 is a wasteful number, since it uses less digits than its factorization.

1354140405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107381 (or 107378 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1354140405 is about 36798.6467821848. The cubic root of 1354140405 is about 1106.3381766352.

Adding to 1354140405 its reverse (5040414531), we get a palindrome (6394554936).

The spelling of 1354140405 in words is "one billion, three hundred fifty-four million, one hundred forty thousand, four hundred five".