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40742901 = 326767567
BaseRepresentation
bin1001101101101…
…0111111110101
32211122221202100
42123122333311
540412233101
64013132313
71003210653
oct233327765
984587670
1040742901
1120aa8821
121178a099
138596a34
1455a7dd3
15389be86
hex26daff5

40742901 has 12 divisors (see below), whose sum is σ = 59730112. Its totient is φ = 26756136.

The previous prime is 40742893. The next prime is 40742903. The reversal of 40742901 is 10924704.

It is a happy number.

It is not a de Polignac number, because 40742901 - 23 = 40742893 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 (40742903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33181 + ... + 34386.

Almost surely, 240742901 is an apocalyptic number.

It is an amenable number.

40742901 is a deficient number, since it is larger than the sum of its proper divisors (18987211).

40742901 is a wasteful number, since it uses less digits than its factorization.

40742901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67640 (or 67637 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40742901 is about 6383.0166065897. The cubic root of 40742901 is about 344.0994535095.

The spelling of 40742901 in words is "forty million, seven hundred forty-two thousand, nine hundred one".

Divisors: 1 3 9 67 201 603 67567 202701 608103 4526989 13580967 40742901