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130420537 = 1310032349
BaseRepresentation
bin1111100011000…
…00111100111001
3100002102001100021
413301200330321
5231341424122
620535210441
73142361542
oct761407471
9302361307
10130420537
1167689975
1237816a21
1321035020
141346d4c9
15b6b31c7
hex7c60f39

130420537 has 4 divisors (see below), whose sum is σ = 140452900. Its totient is φ = 120388176.

The previous prime is 130420531. The next prime is 130420567. The reversal of 130420537 is 735024031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21864976 + 108555561 = 4676^2 + 10419^2 .

It is a cyclic number.

It is not a de Polignac number, because 130420537 - 215 = 130387769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130420531) 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, 5016162 + ... + 5016187.

It is an arithmetic number, because the mean of its divisors is an integer number (35113225).

Almost surely, 2130420537 is an apocalyptic number.

It is an amenable number.

130420537 is a deficient number, since it is larger than the sum of its proper divisors (10032363).

130420537 is a wasteful number, since it uses less digits than its factorization.

130420537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10032362.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 130420537 is about 11420.1811281608. The cubic root of 130420537 is about 507.1253588431.

Adding to 130420537 its reverse (735024031), we get a palindrome (865444568).

The spelling of 130420537 in words is "one hundred thirty million, four hundred twenty thousand, five hundred thirty-seven".

Divisors: 1 13 10032349 130420537