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30420014997 = 310140004999
BaseRepresentation
bin11100010101001011…
…001001011110010101
32220112000121212122010
4130111023021132111
5444300010434442
621550314254433
72124556601241
oct342513113625
986460555563
1030420014997
11119a033a569
125a8b727419
132b3a3c3898
14168813d421
15bd0942b9c
hex7152c9795

30420014997 has 4 divisors (see below), whose sum is σ = 40560020000. Its totient is φ = 20280009996.

The previous prime is 30420014993. The next prime is 30420015013. The reversal of 30420014997 is 79941002403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30420014997 - 22 = 30420014993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420014993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5070002497 + ... + 5070002502.

It is an arithmetic number, because the mean of its divisors is an integer number (10140005000).

Almost surely, 230420014997 is an apocalyptic number.

It is an amenable number.

30420014997 is a deficient number, since it is larger than the sum of its proper divisors (10140005003).

30420014997 is a wasteful number, since it uses less digits than its factorization.

30420014997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140005002.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 30420014997 in words is "thirty billion, four hundred twenty million, fourteen thousand, nine hundred ninety-seven".

Divisors: 1 3 10140004999 30420014997