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1020402412 = 22255100603
BaseRepresentation
bin111100110100100…
…001101011101100
32122010001210221221
4330310201223230
54042210334122
6245130433124
734200164101
oct7464415354
92563053857
101020402412
11483a99487
122458927a4
13133531813
149973caa8
155e8b16c7
hex3cd21aec

1020402412 has 6 divisors (see below), whose sum is σ = 1785704228. Its totient is φ = 510201204.

The previous prime is 1020402403. The next prime is 1020402421. The reversal of 1020402412 is 2142040201.

It is an interprime number because it is at equal distance from previous prime (1020402403) and next prime (1020402421).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127550298 + ... + 127550305.

Almost surely, 21020402412 is an apocalyptic number.

It is an amenable number.

1020402412 is a deficient number, since it is larger than the sum of its proper divisors (765301816).

1020402412 is a wasteful number, since it uses less digits than its factorization.

1020402412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255100607 (or 255100605 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1020402412 is about 31943.7382283289. The cubic root of 1020402412 is about 1006.7550702787.

Adding to 1020402412 its reverse (2142040201), we get a palindrome (3162442613).

The spelling of 1020402412 in words is "one billion, twenty million, four hundred two thousand, four hundred twelve".

Divisors: 1 2 4 255100603 510201206 1020402412