131920426 has 16 divisors (see below), whose sum is σ = 216111168. Its totient is φ = 59896800.

The previous prime is 131920421. The next prime is 131920457. The reversal of 131920426 is 624029131.

It is a junction number, because it is equal to n+sod(n) for n = 131920394 and 131920403.

It is not an unprimeable number, because it can be changed into a prime (131920421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20566 + ... + 26206.

It is an arithmetic number, because the mean of its divisors is an integer number (13506948).

Almost surely, 2^131920426 is an apocalyptic number.

131920426 is a deficient number, since it is larger than the sum of its proper divisors (84190742).

131920426 is a wasteful number, since it uses less digits than its factorization.

131920426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 131920426 is about 11485.6617571649. The cubic root of 131920426 is about 509.0620026549.

Adding to 131920426 its reverse (624029131), we get a palindrome (755949557).

The spelling of 131920426 in words is "one hundred thirty-one million, nine hundred twenty thousand, four hundred twenty-six".