19742058 has 24 divisors (see below), whose sum is σ = 48885408. Its totient is φ = 5640552.

The previous prime is 19742057. The next prime is 19742059. The reversal of 19742058 is 85024791.

It is an interprime number because it is at equal distance from previous prime (19742057) and next prime (19742059).

It is a super-3 number, since 3×19742058³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19742057) 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, 78216 + ... + 78467.

It is an arithmetic number, because the mean of its divisors is an integer number (2036892).

Almost surely, 2^19742058 is an apocalyptic number.

19742058 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19742058 is an abundant number, since it is smaller than the sum of its proper divisors (29143350).

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

19742058 is a wasteful number, since it uses less digits than its factorization.

19742058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156698 (or 156695 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 19742058 is about 4443.2035739993. The cubic root of 19742058 is about 270.2697715193.

The spelling of 19742058 in words is "nineteen million, seven hundred forty-two thousand, fifty-eight".