406997542 has 16 divisors (see below), whose sum is σ = 721769760. Its totient is φ = 168412608.

The previous prime is 406997533. The next prime is 406997573. The reversal of 406997542 is 245799604.

406997542 is a modest number, since divided by 997542 gives 406 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 406997492 and 406997501.

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, 500823 + ... + 501634.

It is an arithmetic number, because the mean of its divisors is an integer number (45110610).

Almost surely, 2^406997542 is an apocalyptic number.

406997542 is a deficient number, since it is larger than the sum of its proper divisors (314772218).

406997542 is a wasteful number, since it uses less digits than its factorization.

406997542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002495.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 406997542 is about 20174.1800824718. The cubic root of 406997542 is about 741.0780136689.

The spelling of 406997542 in words is "four hundred six million, nine hundred ninety-seven thousand, five hundred forty-two".