13400542 has 4 divisors (see below), whose sum is σ = 20100816. Its totient is φ = 6700270.

The previous prime is 13400509. The next prime is 13400551. The reversal of 13400542 is 24500431.

It is a semiprime because it is the product of two primes.

13400542 is a modest number, since divided by 542 gives 134 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3350134 + ... + 3350137.

It is an arithmetic number, because the mean of its divisors is an integer number (5025204).

Almost surely, 2^13400542 is an apocalyptic number.

13400542 is a deficient number, since it is larger than the sum of its proper divisors (6700274).

13400542 is an equidigital number, since it uses as much as digits as its factorization.

13400542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700273.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 13400542 is about 3660.6750743545. The cubic root of 13400542 is about 237.5239761575.

Adding to 13400542 its reverse (24500431), we get a palindrome (37900973).

The spelling of 13400542 in words is "thirteen million, four hundred thousand, five hundred forty-two".