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120401142 = 2320066857
BaseRepresentation
bin1110010110100…
…10110011110110
322101120000022120
413023102303312
5221310314032
615540340410
72661251511
oct713226366
9271500276
10120401142
1161a66184
12343a4706
131bc376a4
1411dc1d78
15a88462c
hex72d2cf6

120401142 has 8 divisors (see below), whose sum is σ = 240802296. Its totient is φ = 40133712.

The previous prime is 120401131. The next prime is 120401147. The reversal of 120401142 is 241104021.

It is a sphenic number, since it is the product of 3 distinct primes.

120401142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120401147) 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, 10033423 + ... + 10033434.

It is an arithmetic number, because the mean of its divisors is an integer number (30100287).

Almost surely, 2120401142 is an apocalyptic number.

120401142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

120401142 is a wasteful number, since it uses less digits than its factorization.

120401142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20066862.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 120401142 is about 10972.7454176245. The cubic root of 120401142 is about 493.7914153798.

Adding to 120401142 its reverse (241104021), we get a palindrome (361505163).

The spelling of 120401142 in words is "one hundred twenty million, four hundred one thousand, one hundred forty-two".

Divisors: 1 2 3 6 20066857 40133714 60200571 120401142