402646542406 has 8 divisors (see below), whose sum is σ = 610755991560. Its totient is φ = 199061211888.

The previous prime is 402646542401. The next prime is 402646542437. The reversal of 402646542406 is 604245646204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×402646542406² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402646542401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131029436 + ... + 1131029791.

It is an arithmetic number, because the mean of its divisors is an integer number (76344498945).

Almost surely, 2^402646542406 is an apocalyptic number.

402646542406 is a deficient number, since it is larger than the sum of its proper divisors (208109449154).

402646542406 is a wasteful number, since it uses less digits than its factorization.

402646542406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262059318.

The product of its (nonzero) digits is 1105920, while the sum is 43.

The spelling of 402646542406 in words is "four hundred two billion, six hundred forty-six million, five hundred forty-two thousand, four hundred six".