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3137429 = 16718787
BaseRepresentation
bin1011111101111110010101
312220101202002
423331332111
51300344204
6151125045
735445011
oct13757625
95811662
103137429
111853219
121073785
1385b089
145b9541
1541e91e
hex2fdf95

3137429 has 4 divisors (see below), whose sum is σ = 3156384. Its totient is φ = 3118476.

The previous prime is 3137399. The next prime is 3137447. The reversal of 3137429 is 9247313.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9247313 = 54117093.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3137429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130429) 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, 9227 + ... + 9560.

It is an arithmetic number, because the mean of its divisors is an integer number (789096).

Almost surely, 23137429 is an apocalyptic number.

It is an amenable number.

3137429 is a deficient number, since it is larger than the sum of its proper divisors (18955).

3137429 is a wasteful number, since it uses less digits than its factorization.

3137429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18954.

The product of its digits is 4536, while the sum is 29.

The square root of 3137429 is about 1771.2789164894. The cubic root of 3137429 is about 146.3944577963.

The spelling of 3137429 in words is "three million, one hundred thirty-seven thousand, four hundred twenty-nine".

Divisors: 1 167 18787 3137429