394145102 has 32 divisors (see below), whose sum is σ = 688528512. Its totient is φ = 167560704.

The previous prime is 394145041. The next prime is 394145107. The reversal of 394145102 is 201541493.

It is a super-2 number, since 2×394145102² = 310700722861180808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394145107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11288 + ... + 30260.

It is an arithmetic number, because the mean of its divisors is an integer number (21516516).

Almost surely, 2^394145102 is an apocalyptic number.

394145102 is a deficient number, since it is larger than the sum of its proper divisors (294383410).

394145102 is a wasteful number, since it uses less digits than its factorization.

394145102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19052.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 394145102 is about 19853.0879713963. The cubic root of 394145102 is about 733.1936775838.

Adding to 394145102 its reverse (201541493), we get a palindrome (595686595).

The spelling of 394145102 in words is "three hundred ninety-four million, one hundred forty-five thousand, one hundred two".