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120002001 = 3723412441
BaseRepresentation
bin1110010011100…
…01010111010001
322100210201210120
413021301113101
5221210031001
615524020453
72655000030
oct711612721
9270721716
10120002001
1161813309
1234231729
131bb27b02
1411d1a717
15a806236
hex72715d1

120002001 has 16 divisors (see below), whose sum is σ = 183013248. Its totient is φ = 68515200.

The previous prime is 120001939. The next prime is 120002021. The reversal of 120002001 is 100200021.

It is a happy number.

It is not a de Polignac number, because 120002001 - 215 = 119969233 is a prime.

It is a super-3 number, since 3×1200020013 (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (120002021) 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, 47941 + ... + 50381.

It is an arithmetic number, because the mean of its divisors is an integer number (11438328).

Almost surely, 2120002001 is an apocalyptic number.

It is an amenable number.

120002001 is a deficient number, since it is larger than the sum of its proper divisors (63011247).

120002001 is a wasteful number, since it uses less digits than its factorization.

120002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 120002001 is about 10954.5424824590. The cubic root of 120002001 is about 493.2451564566.

Adding to 120002001 its reverse (100200021), we get a palindrome (220202022).

The spelling of 120002001 in words is "one hundred twenty million, two thousand, one".

Divisors: 1 3 7 21 2341 2441 7023 7323 16387 17087 49161 51261 5714381 17143143 40000667 120002001