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420121106 = 21391511227
BaseRepresentation
bin11001000010101…
…000101000010010
31002021112100210222
4121002220220102
51330022333411
6105404353042
713260653606
oct3102505022
91067470728
10420121106
111a6169229
12b8845782
1369067b92
143db21506
1526d3a4db
hex190a8a12

420121106 has 8 divisors (see below), whose sum is σ = 634715760. Its totient is φ = 208549188.

The previous prime is 420121087. The next prime is 420121157. The reversal of 420121106 is 601121024.

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

It is a super-3 number, since 3×4201211063 (a number of 27 digits) contains 333 as substring.

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, 755336 + ... + 755891.

It is an arithmetic number, because the mean of its divisors is an integer number (79339470).

Almost surely, 2420121106 is an apocalyptic number.

420121106 is a deficient number, since it is larger than the sum of its proper divisors (214594654).

420121106 is a wasteful number, since it uses less digits than its factorization.

420121106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511368.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 420121106 is about 20496.8560028117. The cubic root of 420121106 is about 748.9592117553.

The spelling of 420121106 in words is "four hundred twenty million, one hundred twenty-one thousand, one hundred six".

Divisors: 1 2 139 278 1511227 3022454 210060553 420121106