402147412 has 6 divisors (see below), whose sum is σ = 703757978. Its totient is φ = 201073704.

The previous prime is 402147397. The next prime is 402147419. The reversal of 402147412 is 214741204.

It can be written as a sum of positive squares in only one way, i.e., 373030596 + 29116816 = 19314^2 + 5396^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402147419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50268423 + ... + 50268430.

Almost surely, 2^402147412 is an apocalyptic number.

It is an amenable number.

402147412 is a deficient number, since it is larger than the sum of its proper divisors (301610566).

402147412 is a wasteful number, since it uses less digits than its factorization.

402147412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100536857 (or 100536855 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 402147412 is about 20053.6134399763. The cubic root of 402147412 is about 738.1224694730.

Adding to 402147412 its reverse (214741204), we get a palindrome (616888616).

The spelling of 402147412 in words is "four hundred two million, one hundred forty-seven thousand, four hundred twelve".