1042207400 has 48 divisors (see below), whose sum is σ = 2609533500. Its totient is φ = 384814080.

The previous prime is 1042207337. The next prime is 1042207403. The reversal of 1042207400 is 47022401.

It can be written as a sum of positive squares in 6 ways, for example, as 287166916 + 755040484 = 16946^2 + 27478^2 .

It is a super-2 number, since 2×1042207400² = 2172392529229520000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1042207403) 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, 197825 + ... + 203024.

Almost surely, 2^1042207400 is an apocalyptic number.

1042207400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042207400 is an abundant number, since it is smaller than the sum of its proper divisors (1567326100).

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

1042207400 is a wasteful number, since it uses less digits than its factorization.

1042207400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400878 (or 400869 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1042207400 is about 32283.2371363220. The cubic root of 1042207400 is about 1013.8757075523.

Adding to 1042207400 its reverse (47022401), we get a palindrome (1089229801).

The spelling of 1042207400 in words is "one billion, forty-two million, two hundred seven thousand, four hundred".