249651542 has 16 divisors (see below), whose sum is σ = 438413472. Its totient is φ = 104383680.

The previous prime is 249651539. The next prime is 249651553. The reversal of 249651542 is 245156942.

It is a happy number.

249651542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 249651496 and 249651505.

It is a congruent number.

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, 216893 + ... + 218040.

It is an arithmetic number, because the mean of its divisors is an integer number (27400842).

Almost surely, 2^249651542 is an apocalyptic number.

249651542 is a deficient number, since it is larger than the sum of its proper divisors (188761930).

249651542 is a wasteful number, since it uses less digits than its factorization.

249651542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434983.

The product of its digits is 86400, while the sum is 38.

The square root of 249651542 is about 15800.3652489428. The cubic root of 249651542 is about 629.6677024774.

Adding to 249651542 its product of digits (86400), we get a palindrome (249737942).

The spelling of 249651542 in words is "two hundred forty-nine million, six hundred fifty-one thousand, five hundred forty-two".