406739542 has 16 divisors (see below), whose sum is σ = 670659264. Its totient is φ = 183469000.

The previous prime is 406739539. The next prime is 406739549. The reversal of 406739542 is 245937604.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 406739495 and 406739504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406739549) 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, 67684 + ... + 73447.

It is an arithmetic number, because the mean of its divisors is an integer number (41916204).

Almost surely, 2^406739542 is an apocalyptic number.

406739542 is a deficient number, since it is larger than the sum of its proper divisors (263919722).

406739542 is a wasteful number, since it uses less digits than its factorization.

406739542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141275.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 406739542 is about 20167.7847568839. The cubic root of 406739542 is about 740.9213882000.

The spelling of 406739542 in words is "four hundred six million, seven hundred thirty-nine thousand, five hundred forty-two".