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42192930 = 23513108187
BaseRepresentation
bin1010000011110…
…1000000100010
32221101121211010
42200331000202
541300133210
64104201350
71021430313
oct240750042
987347733
1042192930
11218a919a
1212169256
138983a40
14586460a
153a86920
hex283d022

42192930 has 32 divisors (see below), whose sum is σ = 109053504. Its totient is φ = 10385856.

The previous prime is 42192923. The next prime is 42192937. The reversal of 42192930 is 3929124.

It is an interprime number because it is at equal distance from previous prime (42192923) and next prime (42192937).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (42192937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53704 + ... + 54483.

It is an arithmetic number, because the mean of its divisors is an integer number (3407922).

Almost surely, 242192930 is an apocalyptic number.

42192930 is an abundant number, since it is smaller than the sum of its proper divisors (66860574).

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

42192930 is a wasteful number, since it uses less digits than its factorization.

42192930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108210.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 42192930 is about 6495.6085165287. The cubic root of 42192930 is about 348.1340974816.

The spelling of 42192930 in words is "forty-two million, one hundred ninety-two thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 108187 216374 324561 540935 649122 1081870 1406431 1622805 2812862 3245610 4219293 7032155 8438586 14064310 21096465 42192930