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1420401144 = 233529711173
BaseRepresentation
bin101010010101001…
…1001100111111000
310122222201212001210
41110222121213320
510402110314034
6352540043120
750125132131
oct12452314770
93588655053
101420401144
11669863448
123378334a0
13198372666
14d6902c88
1584a748e9
hex54a999f8

1420401144 has 32 divisors (see below), whose sum is σ = 3551991120. Its totient is φ = 473335296.

The previous prime is 1420401131. The next prime is 1420401163. The reversal of 1420401144 is 4411040241.

It is a self number, because there is not a number n which added to its sum of digits gives 1420401144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121542 + ... + 132714.

Almost surely, 21420401144 is an apocalyptic number.

It is an amenable number.

1420401144 is an abundant number, since it is smaller than the sum of its proper divisors (2131589976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1420401144 is a wasteful number, since it uses less digits than its factorization.

1420401144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16479 (or 16475 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1420401144 is about 37688.2096152099. The cubic root of 1420401144 is about 1124.0966955393.

Adding to 1420401144 its reverse (4411040241), we get a palindrome (5831441385).

The spelling of 1420401144 in words is "one billion, four hundred twenty million, four hundred one thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 24 5297 10594 11173 15891 21188 22346 31782 33519 42376 44692 63564 67038 89384 127128 134076 268152 59183381 118366762 177550143 236733524 355100286 473467048 710200572 1420401144