406139126 has 32 divisors (see below), whose sum is σ = 642746880. Its totient is φ = 192288096.

The previous prime is 406139119. The next prime is 406139131. The reversal of 406139126 is 621931604.

It is a junction number, because it is equal to n+sod(n) for n = 406139092 and 406139101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371036 + ... + 372128.

It is an arithmetic number, because the mean of its divisors is an integer number (20085840).

Almost surely, 2^406139126 is an apocalyptic number.

406139126 is a deficient number, since it is larger than the sum of its proper divisors (236607754).

406139126 is a wasteful number, since it uses less digits than its factorization.

406139126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 406139126 is about 20152.8937376249. The cubic root of 406139126 is about 740.5566337839.

The spelling of 406139126 in words is "four hundred six million, one hundred thirty-nine thousand, one hundred twenty-six".