42920901 has 8 divisors (see below), whose sum is σ = 63586560. Its totient is φ = 28613916.

The previous prime is 42920897. The next prime is 42920909. The reversal of 42920901 is 10902924.

It is not a de Polignac number, because 42920901 - 2² = 42920897 is a prime.

It is a super-3 number, since 3×42920901³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1589663 = 42920901 / (4 + 2 + 9 + 2 + 0 + 9 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42920909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794805 + ... + 794858.

It is an arithmetic number, because the mean of its divisors is an integer number (7948320).

Almost surely, 2^42920901 is an apocalyptic number.

It is an amenable number.

42920901 is a deficient number, since it is larger than the sum of its proper divisors (20665659).

42920901 is a wasteful number, since it uses less digits than its factorization.

42920901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589672 (or 1589666 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 42920901 is about 6551.4045059056. The cubic root of 42920901 is about 350.1248561348.

The spelling of 42920901 in words is "forty-two million, nine hundred twenty thousand, nine hundred one".