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420121244402 = 21170411794761
BaseRepresentation
bin1100001110100010010…
…11010111001011110010
31111011101222020111021222
412013101023113023302
523340402014310102
6521000120145042
742231665441066
oct6072113271362
91434358214258
10420121244402
11152199543102
1269509908182
1330804187412
1416496609aa6
15addd113aa2
hex61d12d72f2

420121244402 has 8 divisors (see below), whose sum is σ = 630187602012. Its totient is φ = 210058710400.

The previous prime is 420121244393. The next prime is 420121244429. The reversal of 420121244402 is 204442121024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 397983077881 + 22138166521 = 630859^2 + 148789^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663299 + ... + 1131462.

Almost surely, 2420121244402 is an apocalyptic number.

420121244402 is a deficient number, since it is larger than the sum of its proper divisors (210066357610).

420121244402 is a wasteful number, since it uses less digits than its factorization.

420121244402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911804.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 420121244402 its reverse (204442121024), we get a palindrome (624563365426).

The spelling of 420121244402 in words is "four hundred twenty billion, one hundred twenty-one million, two hundred forty-four thousand, four hundred two".

Divisors: 1 2 117041 234082 1794761 3589522 210060622201 420121244402